World Cave Database [ http://www-sop.inria.fr/agos-sophia/sis/DB/database.html ]
This is a database of long and deep caves from all around the world. It comes currently in 3 versions: sorted by depth (deeper than 300m), by length (longer than 3kms), and classified by country. - [ Read more ]

The Desert Caves Project [ http://www.saudicaves.com/ ]
The Desert Caves Project website provides articles, travelogues, and photos about cave exploring in Saudi Arabia's Dahna Desert to inform people of the fragility and dangers of the underground caves. - [ Read more ]

Journey Into Amazing Caves [ http://www.amazingcaves.com/home.html ]
Journey Into Amazing Caves tells the story of Nancy Aulenbach and Dr. Hazel Barton, who share a love for caves and cave exploration. Join these two accomplished cavers as they explore unusual caves, like ice caves in Greenland and underwater caves in the jungles of Mexico, looking for important clues about the Earth's past and microorganisms that inhabit its most extreme environments. - [ Read more ]

GORP Caving [ http://gorp.away.com/gorp/activity/caving.htm ]
Enjoy access to resources such as caves, trips, books, organizations, and parks. - [ Read more ]

UK Caving [ http://www.caving.uk.com/Resources/Pages/frame.html ]
A site dedicated to cavers and caving. Includes a club directory, U.K. caving stores, photography, news, art, conservation, and more. - [ Read more ]

Cavers Digest [ http://www.caversdigest.com/ ]
The Cavers Digest is an email list providing communication within the global caving community. Some of the topics discussed include caving equipment, caving techniques, various scientific research related to caves, as well as any other information pertaining to caves in one way or another. - [ Read more ]

U.S. Cavers Forum [ http://nssmembersforum.proboards28.com/index.cgi ]
Discussion forums about cave gear, trips, photography, cave conservation and speleology, and other information. - [ Read more ]

Caves of the Virginias [ http://www.geocities.com/~caves/ ]
The objective of this site is to take you on an underground adventure in some of the caves in West Virginia and Virginia. Get to see and read about some of the amazing places that many had the pleasure to photograph. Look into a barrel of photographs and see what you can find! - [ Read more ]