Instruct: Given a question, retrieve passages that can help answer the question.
Query: What is the tallest waterfall in Yellowstone National Park?
Yellowstone National Park has one of the world's largest petrified forests, trees which were long ago buried by ash and soil and transformed from wood to mineral materials. This ash and other volcanic debris are believed to have come from the park area itself as the central part of Yellowstone is the massive caldera of a supervolcano. The park contains 290 waterfalls of at least , the highest being the Lower Falls of the Yellowstone River at .
Terraced Falls ht. is a waterfall on Fall River in Yellowstone National Park. 
The highest waterfall on Fall River, Terraced Falls was probably named by the Hague Geological Survey in 1885-1886. An attempt was made to rename it "Totem Falls" in the 1920s, but the USBGN kept the original name. Terraced Falls is easily accessed via a short trail from the Ashton-Flagg Ranch Road along Yellowstone National Park's south border.
The Salmon is a popular destination for whitewater kayaking, canoeing, and rafting. The canyons of the Salmon allow for magnificent views of the complex geology of the region. The Frank Church-River of No Return Wilderness Area includes one of the deepest canyons in the continental United States, which at roughly of vertical relief, is deeper than the Grand Canyon.
North of this area, on the slope of Mt Haszard, is Inferno Crater, filled with a striking pale blue lake of highly acidic water with a pH as low as 2.2. The crater was blasted into the side of the mountain as part of the 1886 Mount Tarawera eruption event and remains the site of the largest geyser-like feature in the world. Although the actual geyser plays at the bottom of the lake and cannot be seen, a handful of active fumaroles are visible on the shore and the cliff face behind the lake. The water level of this up-to- lake follows a complicated rhythmic cycle that is interconnected with the nearby Frying Pan Lake.
The Yarlung Tsangpo Grand Canyon or Yarlung Zangbo Grand Canyon () or simply the Tsangpo Canyon, Brahmaputra Canyon or Tsangpo Gorge, along the Yarlung Tsangpo River in Tibet Autonomous Region, China, is the deepest canyon in the world, and at 504.6 km (314 miles) is slightly longer than the Grand Canyon in the United States, making it one of the world's largest. The Yarlung Tsangpo (Tibetan name for the upper course of the Brahmaputra) originates near Mount Kailash and runs east for about 1700 km, draining a northern section of the Himalayas before it enters the gorge just downstream of Pei, Tibet near the settlement of Zhibe. The canyon has a length of about 240 km (150 miles) as the gorge bends around Mount Namcha Barwa (7782 m) and cuts its way through the eastern Himalayan range. Its waters drop from about 2,900 m near Pei to about 1,500 m at the end of the Upper Gorge where the Po Tsangpo River enters. The river continues through the Lower Gorge to the Indian border at an elevation of 660 m. The river then enters Arunachal Pradesh and eventually becomes the Brahmaputra.
The largest national park in the world is the Northeast Greenland National Park, which was established in 1974 and currently protects
The loosely defined term "supervolcano" has been used to describe volcanic fields that produce exceptionally large volcanic eruptions. Thus defined, the Yellowstone Supervolcano is the volcanic field which produced the latest three supereruptions from the Yellowstone hotspot; it also produced one additional smaller eruption, thereby creating the West Thumb of Yellowstone Lake 174,000 years ago. The three supereruptions occurred 2.1 million, 1.3 million, and approximately 630,000 years ago, forming the Island Park Caldera, the Henry's Fork Caldera, and Yellowstone calderas, respectively. The Island Park Caldera supereruption (2.1 million years ago), which produced the Huckleberry Ridge Tuff, was the largest, and produced 2,500 times as much ash as the 1980 Mount St. Helens eruption. The next biggest supereruption formed the Yellowstone Caldera (~ 630,000 years ago) and produced the Lava Creek Tuff. The Henry's Fork Caldera (1.2 million years ago) produced the smaller Mesa Falls Tuff, but is the only caldera from the Snake River Plain-Yellowstone hotspot that is plainly visible today.
Wyoming is home to one of the world’s super-volcanos, Yellowstone, which also happens to host the world’s most profound, and visually stunning example of an active continental hydrothermal system. Since moving to Wyoming, Sims has been coordinating the introduction of novel geochemical and geophysical techniques to study Yellowstone’s “geohydrobiology”, which is the study of how Earth, water and life connect.
In terms of volume, the largest lake in California is Lake Tahoe, located on the California–Nevada border. The area in and around Lake Tahoe is filled with a huge diversity of animals and plants. Many mammals call the Lake Tahoe area home. Included among these are the yellow-bellied marmot, the Douglas squirrel or chickaree, golden-mantled ground squirrel, American martin, mule deer, black bear, coyote, raccoon, beaver, and porcupine.
There are many examples of chalk dry valleys along the North and South Downs in southern England. Notably the National Trust-owned Devil's Dyke near Brighton covers some of downland scarp, and includes the deepest dry valley in the world – created when melting water eroded the chalk downland to the permafrost layer after the last ice age. The three-quarter mile long curved dry valley is around in height and attracts tourists with its views of Sussex, Hampshire and Kent.
Canaima National Park is spread over 30,000 square kilometers to the border with Guayana Esequiba reclamation area now Guyana and Brazil, for its size is considered the world's sixth largest national park. About 65% of the park is occupied by rock plateaus called tepuis. These are a unique biological environment, also presenting a great geological interest. Its steep cliffs and waterfalls (including Angel Falls, which is the highest waterfall of the world, 1,002 m) are spectacular sceneries.Venezuela has many beaches of calm waters and for extreme sports. Besides those already mentioned, most famous sites for its beauty its are:South of Venezuela in the states Bolivar, Amazonas and Delta Amacuro begins the Amazon rainforest, the largest rainforest and the largest nature reserve in the world. This area of the country has great tourism value, because there is the Angel Falls, the highest waterfall of the world; savannah, rivers, forests and tepuis form a ecotourism that has not yet been truly exploited, it is necessary that the national government to promote plans to turn over this Venezuelan soil an essential point for ecotourism in this part of the world.
The "river region" is characterized by fertile mountain valleys and includes the Yarlung Tsangpo River (the upper courses of the Brahmaputra) and its major tributary, the Nyang River, the Salween, the Yangtze, the Mekong, and the Yellow River. The Yarlung Tsangpo Canyon, formed by a horseshoe bend in the river where it flows around Namcha Barwa, is the deepest, and possibly longest canyon in the world. Among the mountains there are many narrow valleys. The valleys of Lhasa, Shigatse, Gyantse and the Brahmaputra are free from permafrost, covered with good soil and groves of trees, well irrigated, and richly cultivated.
Mount Rainier is the tallest mountain in Washington and the Cascade Range. This peak is located just east of Eatonville and just southeast of Seattle and Tacoma. Mount Rainier is ranked third of the 128 ultra-prominent mountain peaks of the United States. Mount Rainier has a topographic prominence of , which is greater than that of K2, the world's second-tallest mountain, at . On clear days it dominates the southeastern horizon in most of the Seattle-Tacoma metropolitan area to such an extent that locals sometimes refer to it simply as "the Mountain." On days of exceptional clarity, it can also be seen from as far away as Corvallis, Oregon, (at Marys Peak) and Victoria, British Columbia.
The river region is characterised by fertile mountain valleys and includes the Yarlung Tsangpo River (the upper courses of the Brahmaputra) and its major tributary, the Nyang River, the Salween, the Yangtze, the Mekong, and the Yellow River. The Yarlung Tsangpo Canyon, formed by a horseshoe bend in the river where it flows around Namcha Barwa, is the deepest, and possibly longest canyon in the world. Among the mountains there are many narrow valleys. The valleys of Lhasa, Xigazê, Gyantse and the Brahmaputra are free from permafrost, covered with good soil and groves of trees, well irrigated, and richly cultivated.
In 1848, during the American occupation of Mexico after the Mexican–American War, Raynolds and other U.S. Army personnel were the first confirmed to have reached the summit Pico de Orizaba, the tallest mountain in Mexico, and inadvertently set what may have been a 50-year American alpine altitude record. In 1859, Raynolds was placed in charge of the first government-sponsored expedition to venture into the upper Yellowstone region that was later to become Yellowstone National Park. Heavy winter snowpack in the Absaroka Range of Wyoming prevented the expedition from reaching the Yellowstone Plateau, forcing them to divert to the south and cross Union Pass at the northern end of the Wind River Range. After negotiating the pass the expedition entered Jackson Hole and surveyed the Teton Range, now within Grand Teton National Park.
The lake is deep at its deepest point, which makes it the deepest lake in the United States, the second-deepest in North America and the ninth-deepest in the world. Crater Lake is often referred to as the seventh-deepest lake in the world, but this former listing excludes the approximately depth of subglacial Lake Vostok in Antarctica, which resides under nearly of ice, and the recent report of a maximum depth for Lake O'Higgins/San Martin, located on the border of Chile and Argentina. However, when comparing its average depth of to the average depth of other deep lakes, Crater Lake becomes the deepest in the Western Hemisphere and the third-deepest in the world. The impressive average depth of this volcanic lake is due to the nearly symmetrical caldera formed 7,700 years ago during the violent climactic eruptions and subsequent collapse of Mount Mazama and the relatively moist climate that is typical of the crest of the Cascade Range.
The Colca Canyon, twice as deep as the Grand Canyon in the United States, is situated in the province of Caylloma. The Cotahuasi Canyon is in the La Union Province. Colca Valley provides incredible close-up views of majestic Andean condors soaring in their natural habitat. Cotahuasi, at , is thought to be the deepest canyon in the world. Both canyons offer spectacular scenery and villages as yet unaffected by the modern world.
The river then flows southward through a steep gorge known as the Kali Gandaki Gorge, or Andha Galchi, between the mountains Dhaulagiri, elevation to the west and Annapurna I, elevation to the east. If one measures the depth of a canyon by the difference between the river height and the heights of the highest peaks on either side, this gorge is the world's deepest. The portion of the river directly between Dhaulagiri and Annapurna I, downstream from Tukuche), is at an elevation of , which is lower than Annapurna I. The river is older than the Himalayas. As tectonic activity forces the mountains higher, the river has cut through the uplift.
Inferno Crater Lake is a large hot spring located in the Waimangu Volcanic Rift Valley on the North Island of New Zealand, and the largest geyser-like feature in the world. The actual geyser is not visible, as it plays underwater at the bottom of the lake, however, fumaroles are visible on the lake's shore and the rock wall behind it.
North of Salmon, the river is joined by the North Fork, before turning west into over of continuous canyons through the Salmon River and Clearwater Mountains – some of the most rugged and isolated terrain in the contiguous United States. Exhibiting upwards of of vertical relief, the Salmon River canyons are some of the deepest in the U.S., surpassing the Grand Canyon and second only to the Snake River's Hells Canyon on the Idaho–Oregon border. Here, the river is joined by its two largest tributaries, the Middle Fork and South Fork. Ten miles (16 km) downstream (west) of its confluence with the Middle Fork, the Salmon River becomes the dividing line for the two time zones in Idaho: Mountain time to the south, Pacific time to the north, bisecting the state at approximately 45½ degrees north latitude.
On January 5, 2019, following alleged bullying and intimidation of the proposed Bighorn Wildland Provincial Park supporters, Minister Phillips issued a statement announcing that public consultations that were planned for Drayton Valley, Edmonton, Red Deer, and Sundre, would be cancelled and with announcements of alternative consultations. The Bighorn Wildland Provincial Park is a proposed provincial park that would be situated near Rocky Mountain House. The proposed area to be set is "about the size of Rhode Island" and is the largest of four proposals for "new or expanded" parks. The proposed region, situated between Banff National Park and Jasper National Park , would provide a vast and critical wildlife corridor for numerous wildlife species, including sensitive species, such as bull trout—Alberta’s provincial fish, wolverine, and grizzly bears, that would extend from Yellowstone National Park in Wyoming in the south to the Yukon in Northern Canada. According to a January 7, 2019 article in "The Globe and Mail", some residents of Rocky Mountain House, a town of 7,000, led by United Conservative Party (UCP) Member of the Legislative Assembly of Alberta (MLA) for Rimbey-Rocky Mountain House-Sundre, Jason Nixon, oppose the creation of the park. Nixon has made unfounded claims that the plan is a "foreign-funded plot to wall off the back country to Albertans who call the region home".
The natural areas include forests, rolling hills, narrow ravines, wetlands, rivers, and waterfalls. About 100 waterfalls are located in the Cuyahoga Valley, with the most popular being the tall Brandywine Falls—the tallest waterfall in the park and the tallest in Northeast Ohio. The Ledges are a rock outcropping that provides a westward view across the valley's wooded areas. Talus caves are located among the boulders in the forest around the Ledges.
Dudhsagar Falls (literally Sea of Milk) is a tiered waterfall located high up on the Mandovi River at the Karnataka border in the southwest part of the park, 10 km upstream from Collem village. At 310 m, it is Goa's tallest waterfall, India's fifth tallest, and is 227th in the world A viaduct of the South Western Railways passes spectacularily through the waterfalls. This popular destination may be reached by hiking along the 10 km one lane dirt road or hiring a 4-wheel drive vehicle at Collem. Access is dangerous and restricted during the monsoon season of June to September.
Yellowstone Falls consist of two major waterfalls on the Yellowstone River, within Yellowstone National Park, Wyoming, United States. As the Yellowstone river flows north from Yellowstone Lake, it leaves the Hayden Valley and plunges first over Upper Yellowstone Falls and then a quarter mile (400 m) downstream over Lower Yellowstone Falls, at which point it then enters the Grand Canyon of the Yellowstone, which is up to 1,000 feet (304 m) deep.
Yellowstone National Park contains at least 45 named waterfalls and cascades, and hundreds more unnamed, even undiscovered waterfalls over high. The highest plunge type waterfall in the park is the lower Falls of Yellowstone Falls at . The highest horsetail type is Silver Cord Cascade at .