Carlsbad Caverns National Park preserves a portion of the Capitan Reef-one of the best-preserved, exposed Permian-age fossil reefs in the world. Water, geologic forces, climactic changes, and vast spans of time have produced and changed the fossil reef and its spectacular caves, a process that continues to the present day.
[{"rock_types": "fossil reefs", "era_formed": "Permian"}]
[{"rock_types": "fossil reefs", "era_formed": "Permian"}] [{"rock_types": "n/a", "era_formed": "n/a"}]