Ghost Pool, Lechaguilla Cave, Carlsbad Caverns National Park, New Mexico Source: Lechaguilla Photo Map Natural Resources: Lechuguilla Cave Lechuguilla Cave was known until 1986 as a small, fairly insignificant historic site in the park's backcountry. Small amounts of bat guano were mined from the entrance passages for a year under a mining claim filed in 1914. The historic cave contained a 90-foot entrance pit which led to 400 feet of dry dead-end passages. The cave was visited infrequently after mining activities ceased. However, in the 1950s cavers heard wind roaring up from the rubble-choked floor of the cave. Although there...