Subterranean rivers flow underground in caves or caverns. There are multiple caverns (including the renowned Kartchner Caverns) and canyons available for visitation. Dungeons appear in areas that include forests, caves, mountains, swamps, underwater caverns, and buildings. Arkansas is home to many caves, such as Blanchard Springs Caverns. The range contains many large cave systems, including Carlsbad Caverns and Lechuguilla Cave. The cave was opened under the name Tennessee Caverns. Surficial deposits also occur in peat bogs, karst caverns and soils. The aquarium was modelled on the limestone caverns in Derbyshire. Gas more recently was stored in large underground reservoirs such as salt caverns. Cybele was the goddess of caverns and mountains. Aker protects the sun god during his nocturnal travelling through the underworld caverns. Maria suggests that DuPris may have hidden the ship in Carlsbad Caverns. New Mexico has two national parks, at Carlsbad Caverns and White Sands. The lake is connected to a spring that continues deeper into the caverns. Ragnar fights his way through the monster-riddled caverns.