• National Karst Map

  http:www2.nature.nps.gov/nckri/map/maps/index.html

• Karst Landscapes of Illinois

  http://www.isgs.uiuc.edu/servs/pubs/geobits-pub/geobit7/geobit7.html

• Missouri Karst and Springs

  http://www.umsl.edu/~joellaws/ozark_caving/springs/sprkarst.htm

• Missouri Springs, Jewels of the Ozarks

  http://www.umsl.edu/~joellaws/ozark_caving/springs/jspring.html

• Karst in Indiana - A good overview of Karst landscapes in Indiana

  http://igs.indiana.edu/geology/karst/karstInIndiana/index.cfm

• Living on Karst - A guide about the environmental problems associated with living on Karst by the Virginia Cave Conservancy

  http://www.wvcc.net/Living_On_Karst.htm

• Karst - An excellent site on karst in British Columbia. The site defines karst and how it is formed, addresses karst ecosystems, aboriginal use, scientific and educational value, karst sensitivity and management of karst resources.

  http://www.for.gov.bc.ca/hfp/fordev/karst/contents.htm

• Texas Caves and Karst

  http://csweb.winona.edu/semnwrb/files/general/txcaves/txcaves.htm

• Karst Glossary

  http://www.nps.gov/ozar/glossary.htm

• What is Karst?

  http://www.for.gov.bc.ca/hfp/fordev/karst/what.htm

• Karst Topography: Be sure to check out "Karst: The Movie", it is well worth the download wait.

  http://www.watersheds.org/teacher/rd.htm

• Karst Map of the U.S.: A map of carbonate aquifers of the United States

  http://water.usgs.gov/ogw/karst/karstaquifers.htm

Sinkhole plain, Mammoth Cave, Kentucky
Photo: Chris Groves

North Coast Karst, Puerto Rico
Photo: Pat Kambesis

Karst towers, China
Photo: Pat Kambesis