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A Nature Tourism Route through GIS to Improve the Visibility of the Natural Resources of the Altar Volcano, Sangay National Park, Ecuador

: Tourism in natural areas attracts people seeking contact with pristine ecosystems as opposed to a polluted urban habitat and a stressful pace of life. An adequate tourist route and itinerary guarantees a high level of tourist satisfaction. The objective of this study was to focus on the design of a tourist route and itinerary in the Altar Volcano, Sangay National Park, central Ecuador, by integrating tourist attractions and facilities. Within the methodological process, the main tourist attractions of the area were identiﬁed and georeferenced; then, a thematic map was elaborated using ArcGIS 10.5 ® software. Distances were determined by considering the transportation alternatives in relation to the base camps. Finally, the itinerary was structured by considering the possible tourist activities of each place or attraction. As a result, a tourist route was obtained that included 19 attractions and an itinerary that interacts with various activities in the study area. This research will strengthen tourism activities in the Altar Volcano, allowing for an increase in the number of visitors and the development of sustainable tourism thanks to proper planning in the use of a new tourist route.


Introduction
Tourism is currently one of the most important economic and cultural activities that a country or region can count on. Tourism activities may be implemented in many variants, one of them and one of the fastest growing in recent years being nature-based tourism. There is no doubt that tourism has contributed to the economic development through the generation of jobs, income, and improvement of countries' visibility [1,2]. However, this situation has changed due to the COVID-19 pandemic, which has caused huge losses in this sector; at the global level, it was estimated that there was a loss of 300 to 450 billion dollars in inbound tourism in 2020 [3]. The United Nations World Tourism Organization (UNWTO) indicated that the arrival of foreign tourists recorded a historic decline by sanitary crisis; the number of international tourists in May 2020 was reduced by 98% compared to 2019 [4]. The prospects for a tourism upturn in 2021 have not became a (2011) [29] indicated that "like the guides that direct the visit in the cities, the routes aim to conduct the activities highlighting what is worth knowing about the tourist territory." Methodologies to design a tourist route are variable. In this context, the Ministry of Tourism from Ecuador [27] proposed the following steps to create a tourist route: (1) identification and classification of tourist attractions, (2) georeferencing and location of tourist places (infrastructure or attractions), (3) tourist distribution model, (4) tourist product (itinerary), (5) innovation (generation of complementary activities), and (6) commercialization and promotion. A tourist itinerary is the graphic expression of the direction to follow within a tourist route or product [27], and it contains detailed information about daily movements, date, transportation modality [30], tourist attractions, duration (time), and activities, including services [27][28][29][30][31].
The province of Chimborazo and its protected areas are characterized by their richness in terms of natural resources; their ecosystem components make up mountain landscapes with a high potential for nature-based tourism [32,33]. Historically, one of the most popular mountain sites for tourism in the province and the country has been the Chimborazo Volcano [34]. However, this trend in the province is changing [35], so that in recent years, increasingly popular are the trips to the Altar Volcano (AV), which is located in the Sangay National Park (SNP) and which became famous for its resources such as the lakes, peaks, and the long trekking to climb it.
Considering this new trend of mountain nature tourism and an increasing influx of tourists, current problems have been evidenced such as the current time required to cover the route from the start to the top of the mountain, its difficulty, restriction of access to the mountain to only highly trained hikers and climbers, and last but not least, the absence of many natural features in the existing route, which could be a factor that decreases the interest of nature-based tourists [36]. Thus, the objective of this study focused on designing a new nature tourism route in the Altar Volcano in the SNP that would serve as a sustainable management tool for managers and authorities in the province of Chimborazo, Ecuador. A mixed exploratory and descriptive methodology was used. The field work, together with the bibliographic review, made it possible to inventory the sites of interest and the available activities. Finally, the information was processed with the support of ArcGIS 10.5 ® software, allowing the construction and description of a new nature tourism route and its itinerary.

Study Area
The Altar Volcano has an altitude of 5319 m.a.s.l., which makes it the fifth highest mountain in Ecuador. It is located between the provinces of Morona Santiago and Chimborazo in the south-central eastern Andean region of Ecuador (Figure 1), in the Sangay National Park, which is one of the 62 protected areas of the country. The main access to the Altar Volcano is through the rural parish of Quimiag, which is located in the Riobamba Canton. The volcano is characterized by its inactivity, being covered by glaciers, and exhibiting several peaks as a result of its past activities. Its name-Altar-comes from its resemblance of the altar of a church; in addition, its summits have very special ecclesiastical names, such as "Bishop". It is considered one of the most representative mountains in the country, thanks to its scenic beauty. The presence of lakes between its glaciers and peaks makes this volcano a resource with high tourist potential, thanks to its unique panoramic views.

Methodology
The methodology used in this study was explorative, analytical, and descriptive (Figure 2). For a better understanding, the methodological process, which responds to the objectives set out in this study, has been sectioned. In the first section, through the use of literature review and field exploration, a mapping (georeferencing and description) of the main points of tourist interest in the study area was carried out. Secondly, by using ArcGIS 10.5 ® and Google Earth Pro, the information was analyzed to create the route and the itinerary, considering the tourist attractions, their distances, potential activities, and travel time.

Methodology
The methodology used in this study was explorative, analytical, and descriptive ( Figure 2). For a better understanding, the methodological process, which responds to the objectives set out in this study, has been sectioned. In the first section, through the use of literature review and field exploration, a mapping (georeferencing and description) of the main points of tourist interest in the study area was carried out. Secondly, by using ArcGIS 10.5 ® and Google Earth Pro, the information was analyzed to create the route and the itinerary, considering the tourist attractions, their distances, potential activities, and travel time.

Methodology
The methodology used in this study was explorative, analytical, and descriptive (Figure 2). For a better understanding, the methodological process, which responds to the objectives set out in this study, has been sectioned. In the first section, through the use of literature review and field exploration, a mapping (georeferencing and description) of the main points of tourist interest in the study area was carried out. Secondly, by using ArcGIS 10.5 ® and Google Earth Pro, the information was analyzed to create the route and the itinerary, considering the tourist attractions, their distances, potential activities, and travel time.

Mapping of the Main Points of Tourist Interest
The processes of mapping and describing the main points of tourist interest are described in Table 1. First, a bibliographic review was carried out, which allowed to identify the main points of tourist interest and facilities in the study area. In this first process, scientific literature such as articles and books indexed in regional databases (Scielo and Redalyc) and high-impact databases (Scopus and Web of Science) were reviewed. Information complemented with gray literature such as reports and tourist guides, provided by governmental institutions such as the Ministry of Tourism and Decentralized Autonomous Governments. Afterwards, an initial database was designed with the tourist attractions and their geolocations marked on the route obtained through a field trip. For this purpose, the tourist attractions were georeferenced in the field using a GPS (Global Positioning System) unit (model: GPSMAP ® 66i; make: GARMIN; city: Kansas; country: United States of America) technology and mobile applications such as "C7 GPS Datos," "All Trails," "Maps.me," and "UTM Geo Map," while the rest of the points were identified and georeferenced using desktop software such as Google Earth. During this phase, the guidance of experienced local people was important to suggest the most visited and accessible attractions. Finally, the collected information (coordinates) was processed in ArcGIS 10.5 ® software using the Universal Transverse Mercator Reference System (UTM), World Geodetic System (WGS 1984), zone 17. This information was crosschecked and validated with official tourism information provided by the local government of Riobamba [37][38][39].

Tourist Route Design
Once the identification of the tourist attractions was made through bibliographic review and validated with field work, the interest points and tourist features were shortly described, coded, and located according to the province to which they belonged. For a better description and analysis, the route included two alternatives, resulting in a network of attractions interconnected by possible routes. The first alternative was proposed for trekking, while the second was planned for climbers to reach the summit of the mountain. Both alternatives were planned for a two-day itinerary.
For the design of the tourist route, the input files were the layers (images) obtained from the official international satellite image download portals, which were projected to the Universal Transversal Mercator (UTM), World Geodetic System (1984), zone 17 S coordinate system, considering that these geographic features are specific for the Continental Ecuador, in central Highland Region [40][41][42]. The starting and finishing points of the route were identified, and for the design of the route, maps of the study area and georeferenced tourist attractions and facilities were used. To this end, georeferencing tools of ArcGIS 10.5 ® software and Google Earth Pro allowed to integrate the network of attractions.
The distances traveled between tourist attractions were calculated based on a field trip done on 28 and 29 December 2020 with the participation of native people and of the research team of the Escuela Superior Politécnica de Chimborazo (ESPOCH). From the viewpoints, reference distances were calculated in a straight line to observe specific attractions. The field calculator tool of ArcGIS 10.5 ® software was used for this purpose.
Once the information has been reviewed, explored, and analyzed, the results are presented. The first section describes the mapping of the main sites of tourist interest in the Altar Volcano area of SNP. Additionally, the design of the tourist route and its itinerary were described. In this section were include some flora and fauna species which were obtained through rapid biological inventories along the route.

Tourist Attractions on the Altar Volcano Route
Nineteen points of tourist interest were identified through the field trips. The interest points in the area ( Table 2) are represented by tourist attractions and tourist facilities (base camps). To this end, "Vasija" (VJ), located in Riobamba city, was considered the starting point of reference in the road network toward the AV. Each tourist attraction was mapped and represented by a point and labeled with a red number as shown in Figures 2 and 3.
The mountain lake complex "El Altar" corresponds to periglacial wetland formations, whose height varies from 3803 to 4553 m.a.s.l.

Design of Tourist Route
Once the mapping and description of the main tourist sites in the study area was completed, the 19 tourist points were grouped into two alternatives ( Figure 3). In addition, the reference distance to the attractions in a straight line was included, with respect to the observer. For instance, from point 14, it is possible to observe tourist attractions at points 15, and 16. However, the distances indicated in a straight line are not practicable by trekking. They are only representing the distance to a point of interest that can be viewed from a given point on the route The main route including alternative 1 corresponds to the trekking route; this zone is characterized by ecosystems with abundant Andean vegetation and minimal anthropogenic impacts in terms of land use changes. Alternative 2 represents the mountain climbing alternative to the summit of the BP, which is the highest peak of the AV. Moreover, on the route it is possible to observe landscapes of mountain tourism such as the peaks and the lake system. It should be noted that alternative 2 should be covered only with organized groups and tour operators regulated in the information system which should have guides specialized in mountain adventure. Figure 4 and Table 3 show the distances between the different tourist attractions, which make the route (BT PG, BC, GA, VV, ML, MC, PL, CAV, and IC) by taking into consideration the possible ways of traveling or viewing between any two given points. Therefore, the distances between any two given points for which a ground transportation possibility is specified represent the real ground distances, while the distances between any two given points for which "only viewing" is specified as an alternative represent the straight-line reference distance between those points extracted from the used mapping software. These lines were considered just to see the attractions because there are no established routes. In addition, the topographic conditions of the terrain are not optimal to visit the attractions.
The total distance of the general route is 45.14 km, which starts from the VJ point and ends at the MC point. The trekking route includes the general route and the first alternative, which make a total distance of 46.51 km, up to the CAV point (point 14, Figures 2 and 3). Finally, the planned alternative for climbers to reach the summit of AV has a distance of 47.98 km.
The longest distance to travel is from VJ to BT (33.26 km), which corresponds to a travel by vehicle. For the trekking route (alternative 1), a route is made from the BT to the MC, where tourist attractions such as the following are located: (i) the Padguazo forest (PG), (ii) the gates of the Altar viewpoint (GA) from where the lakes can be observed (SL, SIL, and GL), (iii) the viewpoint of the valley (VV), and (iv) the Mandur lake, to finally reach the Mandur camp (MC). From the second route which can be used to climb to the top of the AV from the viewpoint of the valley (VV), it is possible to observe the blue lake (BL) and walk towards the Italian camp (IC) prior to the ascent to Bishop peak (BP).

Tourist Attractions on the Altar Volcano Route
Nineteen points of tourist interest were identified through the field trips. The interest points in the area ( Table 2) are represented by tourist attractions and tourist facilities (base camps). To this end, "Vasija" (VJ), located in Riobamba city, was considered the starting point of reference in the road network toward the AV. Each tourist attraction was mapped and represented by a point and labeled with a red number as shown in Figures 2 and 3.

Tourist Attractions on the Altar Volcano Route
Nineteen points of tourist interest were identified through the field trips. The interest points in the area ( Table 2) are represented by tourist attractions and tourist facilities (base camps). To this end, "Vasija" (VJ), located in Riobamba city, was considered the starting point of reference in the road network toward the AV. Each tourist attraction was mapped and represented by a point and labeled with a red number as shown in Figures 2 and 3. Plain located under the gates of Altar , which is used for camping for groups of more than 5 people.

Padguazo
Remnants of a Polylepis forest (Polylepis incana). It is a place to rest and camp.

Tourist Attractions on the Altar Volcano Route
Nineteen points of tourist interest were identified through the field trips. The interest points in the area ( Table 2) are represented by tourist attractions and tourist facilities (base camps). To this end, "Vasija" (VJ), located in Riobamba city, was considered the starting point of reference in the road network toward the AV. Each tourist attraction was mapped and represented by a point and labeled with a red number as shown in Figures 2 and 3. Plain located under the gates of Altar , which is used for camping for groups of more than 5 people.
Base camp Plain located under the gates of Altar, which is used for camping for groups of more than 5 people.

Tourist Attractions on the Altar Volcano Route
Nineteen points of tourist interest were identified through the field trips. The interest points in the area ( Table 2) are represented by tourist attractions and tourist facilities (base camps). To this end, "Vasija" (VJ), located in Riobamba city, was considered the starting point of reference in the road network toward the AV. Each tourist attraction was mapped and represented by a point and labeled with a red number as shown in Figures 2 and 3.    17 Blue lake * It is the main attraction of this route option apart from the volcano due to its scenic beauty. It is a periglacial wetland that is born from the thaws of the Altar Volcano. Water surface: 51.15 ha. Altitude: 4223 m.a.s.l.

BL 18 Italian Camp
It is the main camp for the high mountain route whose main destination is the summit of "El Obispo," among others.

IC 19
Bishop peak It is the highest peak of the El Altar Volcano with 5319 m.a.s.l., and it is considered one of the most difficult peaks in Ecuador. A very high technical level is required to access this attraction. It is the highest point of the SNP. BP * Places that cannot be visited directly from the route but which can be seen from viewpoints or camps.
The mountain lake complex "El Altar" corresponds to periglacial wetland formations, whose height varies from 3803 to 4553 m.a.s.l.

Design of Tourist Route
Once the mapping and description of the main tourist sites in the study area was completed, the 19 tourist points were grouped into two alternatives (Figure 3). In addition, the reference distance to the attractions in a straight line was included, with respect to the observer. For instance, from point 14, it is possible to observe tourist attractions at points 15, and 16. However, the distances indicated in a straight line are not practicable by trekking. They are only representing the distance to a point of interest that can be viewed from a given point on the route 18 Italian Camp It is the main camp for the high mountain route whose main destination is the summit of "El Obispo," among others.

IC
Land 2021, 10, x FOR PEER REVIEW 9 of 20 17 Blue lake * It is the main attraction of this route option apart from the volcano due to its scenic beauty. It is a periglacial wetland that is born from the thaws of the Altar Volcano. Water surface: 51.15 ha. Altitude: 4223 m.a.s.l.

BL 18 Italian Camp
It is the main camp for the high mountain route whose main destination is the summit of "El Obispo," among others.

IC 19
Bishop peak It is the highest peak of the El Altar Volcano with 5319 m.a.s.l., and it is considered one of the most difficult peaks in Ecuador. A very high technical level is required to access this attraction. It is the highest point of the SNP. BP * Places that cannot be visited directly from the route but which can be seen from viewpoints or camps.
The mountain lake complex "El Altar" corresponds to periglacial wetland formations, whose height varies from 3803 to 4553 m.a.s.l.

Design of Tourist Route
Once the mapping and description of the main tourist sites in the study area was completed, the 19 tourist points were grouped into two alternatives (Figure 3). In addition, the reference distance to the attractions in a straight line was included, with respect to the observer. For instance, from point 14, it is possible to observe tourist attractions at points 15, and 16. However, the distances indicated in a straight line are not practicable by trekking. They are only representing the distance to a point of interest that can be viewed from a given point on the route 19 Bishop peak  17 Blue lake * It is the main attraction of this route option apart from the volcano due to its scenic beauty. It is a periglacial wetland that is born from the thaws of the Altar Volcano. Water surface: 51.15 ha. Altitude: 4223 m.a.s.l.

BL 18 Italian Camp
It is the main camp for the high mountain route whose main destination is the summit of "El Obispo," among others.

IC 19
Bishop peak It is the highest peak of the El Altar Volcano with 5319 m.a.s.l., and it is considered one of the most difficult peaks in Ecuador. A very high technical level is required to access this attraction. It is the highest point of the SNP. BP * Places that cannot be visited directly from the route but which can be seen from viewpoints or camps.
The mountain lake complex "El Altar" corresponds to periglacial wetland formations, whose height varies from 3803 to 4553 m.a.s.l.

Design of Tourist Route
Once the mapping and description of the main tourist sites in the study area was completed, the 19 tourist points were grouped into two alternatives (Figure 3). In addition, the reference distance to the attractions in a straight line was included, with respect to the observer. For instance, from point 14, it is possible to observe tourist attractions at points 15, and 16. However, the distances indicated in a straight line are not practicable by trekking. They are only representing the distance to a point of interest that can be viewed from a given point on the route * Places that cannot be visited directly from the route but which can be seen from viewpoints or camps. Once the mapping and description of the main tourist sites in the study area was completed, the 19 tourist points were grouped into two alternatives (Figure 3). In addition, the reference distance to the attractions in a straight line was included, with respect to the observer. For instance, from point 14, it is possible to observe tourist attractions at points 15, and 16. However, the distances indicated in a straight line are not practicable by trekking. They are only representing the distance to a point of interest that can be viewed from a given point on the route Figure 3. Network of tourist attractions identified by numbers in the study area. Legend: The study area is divided into the main route in blue color (numbers from 1 to 11); alternative 1 for trekking: points 12-16; and alternative 2 for high mountain route: points 17-19.  consideration the possible ways of traveling or viewing between any two given points. Therefore, the distances between any two given points for which a ground transportation possibility is specified represent the real ground distances, while the distances between any two given points for which "only viewing" is specified as an alternative represent the straight-line reference distance between those points extracted from the used mapping software. These lines were considered just to see the attractions because there are no established routes. In addition, the topographic conditions of the terrain are not optimal to visit the attractions.   Figure 5 and Figure 8 shows the general information of the tourist route considering relevant technical data of the journey. The information presented differentiates the routes from the general route with the alternative that is selected (trekking or ascent to the AV summit). Each option requires different levels of preparation, due to physical, technical, and equipment conditions. The route begins in Riobamba, for which it is recommended to have the proper equipment, clothing, and food, depending on the route to be taken (trekking and high mountains). For any option, the support of a certified local or national guide is necessary. In addition, along the way, there are wooden signs placed by the Ministry of Environment that refer to the SNP.

Development of the Itinerary
Land 2021, 10, x FOR PEER REVIEW 12 of 19 to have the proper equipment, clothing, and food, depending on the route to be taken (trekking and high mountains). For any option, the support of a certified local or national guide is necessary. In addition, along the way, there are wooden signs placed by the Ministry of Environment that refer to the SNP.    to have the proper equipment, clothing, and food, depending on the route to be taken (trekking and high mountains). For any option, the support of a certified local or national guide is necessary. In addition, along the way, there are wooden signs placed by the Ministry of Environment that refer to the SNP.   Along the route, seven land use types and ecosystems can be observed, namely (i) managed land, (ii) high montane evergreen forest in the north of the Andes Mountain range (Inguisay community), (iii) highland evergreen forest (path before the forest), (iv) highland grassland (mostly), (v) highland sub-nival grassland and shrubland, (vi) water (wetlands, rivers, and lakes) and (vii) other areas such as rocky areas, rocky areas covered by snow, and glaciers. Figure 8 describes the itinerary for trekking route or to climb to the AV. It was developed in two days considering that most of the locals and tourists frequent this route at that time.
By choosing the second alternative, it is possible to climb on the summit of "El Altar" (BP), but the trekking is very demanding and extremely technical, being suitable only for expert climbers. The peaks bear ecclesiastical names such as Bishop, Big Nun, Little Nun, Tabernacle, Eastern Friar, Blessed Friar, Central Friar, Big Friar, and Canon. This itinerary may enable various activities such as climbing, camping, photography, environmental interpretation, research, observation of flora and fauna, and trekking. Tourist facilities are trails, signs, sanitary batteries, food sales, and camping areas. Among the recommended equipment are insulation (foam mat), hiking sticks, a blocker, rubber boots, a medicine cabinet, a compass or GPS, wool socks, a tent, glasses, a wool cap, light gloves, a flashlight, a backpack of 35 to 45 L maximum capacity, warm and waterproof clothing, and a sleeping bag. Along the route, seven land use types and ecosystems can be observed, namely (i) managed land, (ii) high montane evergreen forest in the north of the Andes Mountain range (Inguisay community), (iii) highland evergreen forest (path before the forest), (iv) highland grassland (mostly), (v) highland sub-nival grassland and shrubland, (vi) water (wetlands, rivers, and lakes) and (vii) other areas such as rocky areas, rocky areas covered by snow, and glaciers. Figure 8 describes the itinerary for trekking route or to climb to the AV. It was developed in two days considering that most of the locals and tourists frequent this route at that time.
By choosing the second alternative, it is possible to climb on the summit of "El Altar" (BP), but the trekking is very demanding and extremely technical, being suitable only for expert climbers. The peaks bear ecclesiastical names such as Bishop, Big Nun, Little Nun, Tabernacle, Eastern Friar, Blessed Friar, Central Friar, Big Friar, and Canon. This itinerary may enable various activities such as climbing, camping, photography, environmental interpretation, research, observation of flora and fauna, and trekking. Tourist facilities are trails, signs, sanitary batteries, food sales, and camping areas. Among the recommended equipment are insulation (foam mat), hiking sticks, a blocker, rubber boots, a medicine cabinet, a compass or GPS, wool socks, a tent, glasses, a wool cap, light gloves, a flashlight, a backpack of 35 to 45 L maximum capacity, warm and waterproof clothing, and a sleeping bag.

Discussion
The PA are essential for the conservation and management of biodiversity and ecosystems [43]. In Ecuador, the PA are important sites for conservation and serve a wide variety of uses [33]. The Sangay National Park (PNS) is one of the best preserved PA of Ecuador [44] with a wide ecosystem [45] and faunistic diversity [46][47][48]. For the Ecuadorian Ministry of Environment, one of the principles of PA is to promote sustainable tourism, which involves the management, zoning, and establishment of strategic alliances with stakeholders [40]. Through this great biodiversity and landscapes, the lack of tourist routes would be a big problem to consolidate a unique experience in this area. So, the route mapping is a useful but little-used technique in visitor research [36]. In relation to the above-mentioned, this study showed new route alternatives with a thorough network analysis in GIS for tourists and locals visiting the AV.
In addition, they are potential areas for the realization of leisure and recreation activities in contact with nature [49]. The tourism use of these areas should be not only an instrument for the economic sustainability and well-being of surrounding populations, but also an object for their proper management [50]. The environment of PA is the raw * *

Discussion
The PA are essential for the conservation and management of biodiversity and ecosystems [43]. In Ecuador, the PA are important sites for conservation and serve a wide variety of uses [33]. The Sangay National Park (PNS) is one of the best preserved PA of Ecuador [44] with a wide ecosystem [45] and faunistic diversity [46][47][48]. For the Ecuadorian Ministry of Environment, one of the principles of PA is to promote sustainable tourism, which involves the management, zoning, and establishment of strategic alliances with stakeholders [40]. Through this great biodiversity and landscapes, the lack of tourist routes would be a big problem to consolidate a unique experience in this area. So, the route mapping is a useful but little-used technique in visitor research [36]. In relation to the above-mentioned, this study showed new route alternatives with a thorough network analysis in GIS for tourists and locals visiting the AV.
In addition, they are potential areas for the realization of leisure and recreation activities in contact with nature [49]. The tourism use of these areas should be not only an instrument for the economic sustainability and well-being of surrounding populations, but also an object for their proper management [50]. The environment of PA is the raw material of tourist activity; it is imperative to find a balance between the use and protection of natural attributes, so that tourist attractions are maintained over time [51]. Therefore, a more adapted stewardship to increase the accessibility of the landscape could bring benefits by mobilizing more people near the tourist attractions [34].
The PNS has no populations immediately close; however, it is considered a tourist center for immediate populations such as Riobamba [52]. In the case of Riobamba Canton, it is surrounded by majestic landscapes and mountains; its different parishes have natural and cultural richness; one of the best-figure direct accesses to "El Altar" and its lake complex is by the parish "Santiago de Quimiag" [37]. In brief, "Capac Urco" has an interesting trekking trail: ecosystems along the route vary from tropical forests to glaciers [53]. At the starting point of the hike, the landscape seems a bit tropical, but at higher altitude, the landscape gradually transforms into pastures and herbs of moor, which has an incredible ability to store water through its unique vegetation, and its ecological and geological qualities. In addition, the weather is very unpredictable, so it is necessary to be ready for rain, and the mountains are often covered with thick clouds and fog. The study route is known as the "Inguisay-Las Puertas, Bocatoma" sector, which requires long walks through self-guided trails to the camping area; lakes can be visited in journeys of 1 to 3 days according to the interest of the visitor.
In this context, leisure is seen as a subjective experience, freely chosen, satisfying and of wide social scope [54][55][56][57][58][59][60][61]. As it happens with other manifestations of leisure, experiences that involve contact with nature bring a number of physical and mental benefits, such as perceived well-being, stress reduction, and physical and mental restoration [59,62,63]. However, tourist satisfaction is also achieved through a second way: emotional connections to the destination during the travel experience [64]. A positive emotional connection is based on a complex combination of negative and positive emotional interactions with attractions, facilities, and services during the travel [65].
In this way, the protection and management of a natural environment is an issue of interest and responsibility for agents involved in the tourist phenomenon and calls for an ethical stance of these agents in host communities and in visited environments [66]. The conditioning of these natural areas can promote the tourism and ecotourism activities; thus it contributes to improving the socio-economic development of the local population and promotes respect for nature in the destination [49]. Regarding the cleanliness and accessibility of the parks, there is a disjunctive; on the one hand, visitors seem to want and value a direct relationship with non-disturbed nature, in a space of intimacy with their close group; and on the other, there is a desire to improve accessibility and services [67]. Therefore, it is necessary to strengthen and maintain factors that enhance the level of tourist satisfaction, such as the diversification of tourist attractions and the viewing time, aspects that will make the perceived value of the trip exceed expectations within the "El Altar" route. The main effect of tourism and development of a community is the presence of a group of commoners, who are native tour guides trained in topics related to the improvement in the provision of tourist services.
On the other hand, the implementation of Geographic Information Systems (GIS) has enabled regional planning, as well as the organization and management of geographical space [68]. In tourist area, the importance of GIS resides in the management that can be given to geographical information, making it possible to represent the territories [69]. It has a significant contribution in planning and decision-making in order to strengthen the tourism within a specific territory. Indeed, itineraries are excellent options to promote the discovery of the environment and heritage [70,71]. In the case of the "Inguisay-Las Puertas" route, it was drawn up through georeferenced points.

Conclusions
According to the problems and objectives of the study, 19 points of interest were initially identified in the study area. The importance and characteristics of these sites made it possible to present two tourist route designs as alternatives for visiting the Altar Volcano in Sangay National Park. The first alternative allows visiting and/or observing 16 sites of interest, while the second alternative allows visiting and/or observing 15 points. These alternatives respond to the problems identified in the current tourism offer of Sangay National Park. The number of days required has been shortened to two; in addition, it can be hiked by hikers with little experience in mountain routes and points have been established to observe greater biodiversity and representative physical elements of the Andean zone.
For the selection of points of interest in the construction of alternative routes, aspects such as safety, scenic beauty, biodiversity, distances, and the time required to travel between attractions and tourist facilities were considered. These will generate confidence and a high level of visitor satisfaction during tourism activities. The itineraries will guarantee the tourist's enjoyment through a variety of activities. Thus, the activities include trekking, camping, and observation of lakes and peaks. It is important to note that the points of interest (SL, SIL, GL, MW, CV, YL, BL) were selected as viewpoints because they allow the visitor to enjoy in all their splendor representative landscapes of the Andean zone such as lakes, valleys, and peaks. This does not preclude access to them, as long as the difficulty of access and its restrictions are considered. The results obtained provide managers and administrators with a tourism management tool to increase the number of visitors without altering the level of satisfaction and boost the economy of local populations.
The main limitation identified in the study was the difficulty in carrying out field work due to the COVID-19 pandemic situation. At the same time, once in the field, this initial limitation facilitated the evaluative work since access to visitors was restricted. It is recommended to continue with the research processes in the study area with a focus on the identification of new points of tourist interest, with the objective of establishing alternative routes and itineraries with a greater number of days, which can link the results of this study. Other fundamental topic for future research is the evaluation of the level of satisfaction and possible environmental impacts on the fragile ecosystems of the area.