Lechuguilla Cave
The 6th deepest cave in the world
The 4th longest cave in the world
Lechuguilla Cave is a cave in Carlsbad Caverns National Park, New Mexico, United States, known for its unusual geology, rare formations, and pristine condition. At 152.11 miles (244.80 km), it is the ninth-longest explored cave in the world. Its measured depth of 1,588.6 feet (484.2 m) makes it the seventh-deepest cave in the United States. The cave is named for the canyon through which it is entered, which is named for Agave lechuguilla, a species of plant found there. Access to the cave is limited to approved scientific researchers, survey and exploration teams, and National Park Service management-related trips.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).