Caving
- 101
- South Wales Caving Club
- Based in Pen-y-bont in the Brecon Beacons. Includes trip and project reports, conservation issues, newsletter, contacts and accommodation booking.
- 102
- Southampton University Caving Club
- Offers trips to Mendip, South Wales and Yorkshire. Includes meeting information, tackle rules, photos and contacts.
- 104
- The Mine Explorer Society
- Mine exploration around Nenthead, Cumbria. Advice, contacts, equipment, glossary and trip details.
- 105
- University of Bristol Spelaeological Society
- UBSS. Caving, exploration, geology, archaeology, biology and photography.
- 106
- University of Leeds Speleological Association
- Based in Northern UK. Includes calendar of events, trip reports, a virtual library, publications for sale and contact information.
- 107
- West Sussex Scouts County Caving Team
- Includes requirements for participation, list of recommended equipment, events calendar, photos and contacts.
- 108
- White Rose Pothole Club
- Based in Yorkshire. Offers trips in the Dales area. Includes membership requirements, photos, library holdings and survey list.
- 109
- William Pengelly Cave Studies Trust
- Established in 1962 to further the study of caves and conservation of the cave environment. Includes its history, events, details of cave studies, memberships and a museum.
- 110
- Wirral Caving Group
- Based on Wirral. Caving and mine exploring in most areas of Britain. Includes trip reports, photos, links and contact information.
- 111
- York University Cave and Pothole Club
- Offers trips in the Yorkshire Dales, the Peak District and South Wales, expeditions to other European countries and SRT training sessions. Includes events calendar, photos and contacts.
- 112
- British Columbia Speleological Federation
- The BCSF coordinates group activities in conservation, safety, rescue, exploration, education and technical expertise. Includes publications, code of conduct and group members.
- 113
- Speleological Society of Manitoba
- Involved in the exploration, research and conservation of caves and karst within the province.
- 114
- Vancouver Island Cave Exploration Group
- Information on local area, conservation, newsletter, contacts, meetings, cave rescue and karst management.
- 115
- AE Vertigo Mexico - Espeleologia Caving
- Promotes exploration, study and conservation. Offers training and trips. Bilingual Spanish/English.
- 116
- Association for Mexican Cave Studies
- Participates in the study, exploration and conservation of caves in Mexico. Official project of the National Speleological Society since 2001. Includes contact information.
- 117
- Proyecto Cerro Rabón
- Speleological exploration in the Cerro Rabón area of the Sierra Mazateca, Oaxaca, Mexico. Galleries, journals, pictures and newsletters.
- 118
- American Cave Conservation Association Inc.
- Based in Horse Cave, Kentucky. Dedicated to preservation of karstlands. Includes membership application, volunteer projects, news, events and contacts.