Located in Ankara, Turkey and a member of the Union of International Speleology. Promotes exploration and conservation. Includes meeting and contact information. [Turkish and English].

Offers expeditions in China and other countries. Includes articles and stories, trip calendar, photos, survey data, and contact information.

ISSA's aim is to promote the artistic interpretation of caves and karst landscape. Membership, galleries, contact, activity and background information.

Formed in 1965 and has departments devoted to protection and management, research, documentation, exploration and education. Includes bulletins and contact information.

Crew is dedicated to exploration, surveying and preservation. Includes trip reports, field notes, databases, photos and contacts.

Formed in 1986 to encourage and facilitate the systematic collection and use of karst and related data on an international basis. Includes calendar of events, project and contact information.