About the Authors and Artist Bibi Booth, Shelly Fischman, and Betsy Wooster are Bureau of Land Management (BLM) Environmental Education Specialists; Richard Brook is a BLM Archaeologist; and Jim Goodbar is a BLM Cave Specialist. Acknowledgments The authors would like to express their appreciation to the following people for their assistance with this article: Pat Barker, Celia Boddington, Kevin Flynn, Mark Goldbach, Craig Harmon, Joelle McCarthy, Garth Portillo, Chris Ross, Stephanie Sironen, Gary Smith, Peg Sorensen, Fred Stabler, Brenda Wilkinson, all of BLM; and Barbara French of Bat Conservation International. References and Resources American Cave Conservation Association http://www.cavern.org/acca/accahome.html  The Archaeology of Hidden Cave, Nevada http://anthro.amnh.org/anthropology/research/hidden.htm Bat Conservation International, Inc. http://www.batcon.org Biospeleology: The Biology of Caves, Karst, and Groundwater http://www.utexas.edu/tmm/sponsored_sites/biospeleology/index.html  California Underground: Our Caves and Subterranean Habitats http://www.museumca.org/caves/onli_realm.html The Great Basin BLM Collections http://hearstmuseum.berkeley.edu/blm/introduction.html Kentucky Geological Survey, Earth Science Education Network http://www.uky.edu/KGS/education/education.html National Outdoor Leadership School. 1998. Leave No Trace Outdoor Skills and Ethics: Caving. To order: 1-800-332-4100; http://www.lnt.org National Park Service Carlsbad Caverns Curriculum Materials http://www.nps.gov/cave/forteachers/index.htm National Park Service Mammoth Cave Curriculum Materials http://www.nps.gov/maca/forteachers/curriculummaterials.htm   National Park Service: More Than Skin Deep-A Teacher's Guide to Caves and Groundwater http://www.nps.gov/ozar/forteachers/skin-deep.htm National Speleological Society http://www.caves.org U.S. Geological Survey, "Exploring Caves" http://egsc.usgs.gov/isb/pubs/teachers-packets/exploringcaves/ Veni, G., et al. 2001. Living with Karst: A Fragile Foundation. American Geological Institute, Environmental Awareness Series, #4. To order: 703-379-2480 White, J.L. 1932. Jim White's Own Story. Carlsbad Caverns Guadalupe Mountains Association. To order: 505-785-2232, x480; http://www.ccgma.org