27px, we want 27. Please register or login . The limestone of the today's caverns was laid down beneath the edge of an ancient sea and then covered with eons of sediment. Cracks in the sediment eventually allowed water loaded with carbonic acid to filter in and dissolve the limestone into colorful caves filled with fantastic formations. Rubber soled shoes and clothing to wear against the chill are required for self-guided walks and guided tours of the deep underground caverns.
Several trails provide foot access.
Southeastern New Mexico. Click here to find out how. Copyright Rodale, Inc. 2001.