Member of Union Belge de Spéléologie. Includes membership list, photos, and contact information. [French and English].

Includes trip reports and photos of expeditions to an island located near Yemen. [Dutch and English].

Based at the University of Leuven. Offers exploration and training sessions. Contains calendar of events, photos of expeditions and contacts. [Flemish and English].

Member of Flemish Caving Federation. Dedicated to exploration and conservation. Overview of activities, project reports, membership requirements, photo galleries, meeting and contact information. [Dutch and English].