Interesting Facts About Carlsbad Caverns
Size: 46,766 acres, including over 33,000 acres designated wilderness
Location and terrain: Southeastern New Mexico; Guadalupe Mountains (primarily limestone) and Permian Basin (primarily gypsum)
Elevation: Ranges from 3,596 feet to 6,368 feet above sea level; Visitor center at 4,406 ft
120 caves known at this time; This number will change as exploration continues.
Largest caves in the park by surveyed length - as of July 31, 2012:
Annual visitation: ~ 360,000. Since 1923, the park has had over 41,000,000 visitors.
Surface ecosystems: Chihuahuan Desert, with Pinyon-Juniper in higher elevations and shrub/grass lands in lower; over 750 plant species.
Mammals: 67 species
Bats: 17 species known to live in the park; 3 species roost inside Carlsbad Cavern; largest colony is of Brazilian Free-tailed bats, Tadarida brasiliensis, also called Mexican Free-tailed bats - population estimated at about 400,000.
Birds: 357 species
A large colony of Cave Swallows, Petrochelidon fulva, have nested just inside the cave entrance since 1966 and been banded and studied continually for over 30 years.
Amphibians and Reptiles: 54 species
1903 - Guano mining begins in Carlsbad Cavern, then known as "Big Cave" or "Bat Cave"
1915-1918 - Ray V. Davis photographs Carlsbad Cavern, which stimulates interest in the cave. Davis' photos appear in the New York Times in 1923.
1923, April 6-May 8 - First survey and mapping of cave, performed by Robert Holly of General Land Office; his awe of the cave and recommendations led to establishment as national site.
1923, October 25 - President Calvin Coolidge creates Carlsbad Cave National Monument
1925 - Wooden stair system built through cave's natural entrance eliminates need for cave visitors to enter via guano bucket
1930, May 14 - Congress designates Carlsbad Caverns National Park
1931 - First elevator shaft blasted and infrastructure installed, goes into operation in January 1932
1950s - Throughout Carlsbad Cavern dirt trails and wooden stair systems are replaced with winding, paved trails.
1955 - Second elevator shaft blasted and installation of larger capacity "passenger" elevators. These become the "primary" elevator system, while smaller original elevators are secondary.
1959, March - Construction of Visitor Center is completed; most recent renovation completed in 2008
1963 - Bat Flight Amphitheater is constructed at the cave's natural entrance to provide seating for visitors to view evening exodus of bats from cave
1972, January 6 - Self-guided tours of entire Cavern are initiated
1973, September - First public, guided tours of Slaughter Canyon Cave, then known as New Cave
1986 - Lechuguilla Cave discovered to have more than entrance pit; current mapped length is over 130 miles
1993, November - Kings Palace guided tours start in "Scenic Rooms" portion of Carlsbad Cavern paved trail system because excessive damage, such as breakage, to cave features during twenty years it was self-guided
1993-94 - Scheduled "adventure tours" are started to Left Hand Tunnel, Lower Cave, Hall of the White Giant, and Spider Cave
1995, December - Carlsbad Caverns National Park is designated a World Heritage