Speleological Group of Sežana - Program details, history, contat information, photos and speleology school. [English, Slovenian and Italian] - http://www.brlog.net/jds/
Caving Club Topolsica - Founded in 1976. Includes activity and research report of Molicka Pec System, and membership list. [Slovenian and English]. - http://www2.arnes.si/~cesjkt1s/eng/index.htm