See also:

• Recreation: Outdoors: Wildlife: Bats  (66)
• Science: Earth Sciences: Geology: Geomorphology: Caves and Karst  (34)

This category in other languages:
	Catalan  (9)   Croatian  (13)   Czech  (10)   French  (186)   German  (26)   Italian  (40)   Japanese  (31)   Lithuanian  (5)   Norwegian  (3)   Polish  (24)   Romanian  (19)   Spanish  (0)   Swedish  (3)

• The Virtual Cave   - A wide-ranging introduction to the geology of caves. Organised by geological feature with pictures and clickable virtual maps.

• Bill Storage - Speleology - Photographs and articles dealing with speleology and cave exploration.
• California Underground Online Exhibits - An overview of the formation of caves, cave conservation, photography and wildlife together with local educational resources. Diagrams, pictures and slide shows.
• Cavechat.org - NSS discussion forum for US cavers including sections for cave diving, news, conservation, equipment, photography, rescue and surveying.
• Caving From Spadout - Articles on the terminology, techniques and gear used for caving. Discussion boards, editable information, feedback and links.
• UIS International Speleo Calendar - Events around the world.
• U.S. Cavers Forum - Discussion forums including caving, the NSS, the study of speleology, cave conservation and management, bats and gear.
• World Cave Database - A list of long and deep caves from all around the world. Listed by depth, length and country.