That's how Erdman described the environment of Carlsbad Cavern
in New Mexico, the centerpiece of Carlsbad Caverns
National Park where a team of University of Arkansas researchers assembled to digitally map and write an exhaustive report on the dimensions, history and condition of one of the country's best-known caves.
The Kasanka bat migration in Zambia, Carlsbad Cavern
in America, Lunar rainbow in Zambia and Shubenacadie tidal bore in Canada take the 16,17,18 and 19 spots.
* Every evening from April to September, hundreds of thousands of Mexican free-tailed bats that live in the "Bat Cave" in Carlsbad Cavern
swarm out of the entrance.
flies against the blue night sky of Carlsbad Cavern
contains a small maternity colony (~100 individuals) of fringed myotis (Myotis thysanodes) that regularly roosts >200 m below the surface of the ground and >1.5 km from the nearest opening to the cavern (Baker, 1962; Geluso and Geluso, 2004).
brasiliensis previously have been reported from Carlsbad Cavern
and bridges in Eddy County during winter (Constantine, 1967; Geluso and Geluso, 2004; Geluso, 2008).
"In a scientific study, you have to develop patience, because if we had gone down to Carlsbad Cavern
and banded birds for three years and left, we wouldn't have learned very much," says West, who used the swallow research to earn a master's degree in science education at New Mexico Tech.
But that was part of the appeal for early visitors to Carlsbad Cavern
, for whom riding the bucket (originally used for extracting bat guano from the cave) was the only way to witness first-hand the fantastic formations that fill this vast netherworld.
After spending more than 35 years absorbed in cave photography, Charles Swedlund has quite the perspective on the subterranean world of Mammoth Cave, Carlsbad Caverns
, Mystery Cave and other similar natural sites.
Spanish, which is probably most common, is spoken both at parks near the Mexican border--including Big Bend National Park, Carlsbad Caverns
National Park, Saguaro National Park and San Antonio Missions National Historical Park--and at sites in places from Florida to Oregon.
In New Mexico, production is occurring ever closer to Carlsbad Caverns
National Park, a United Nations World Heritage Site with more than 119 caves and 33,000 acres of desert wilderness, threatening air quality and the habitats of endangered birds.
On a road trip from Las Vegas to the Grand Canyon in 2009, Alwar Balasubramaniam decided to make a pit stop at the Carlsbad Caverns
in New Mexico.