EKPP - European Karst Plain Project
Recreation, Outdoors, Speleology, Cave Diving - European Karst Plain Project. Includes history, members and sponsors, projects and photos.
http://www.ekpp.org
The Cave Diving Website
Your questions about cave divinganswered (including how to learn to cave dive).
https://www.cavediving.com/
Cave Excursions
Recreation, Outdoors, Speleology, Cave Diving - Cave Excursions. Offers cave training, SCUBA equipment sales and services, air fills, accommodations and personalized trips.
http://sidemount.com
SMART Cave Diving Policy
Recreation, Outdoors, Speleology, Cave Diving - SMART Cave Diving Policy. Safety information from the San Marcos Area Recovery Team, National Speleological Society, USA.
http://www.smartdivers.com