The aim of this course is to familiarize Basic Cave qualified divers with the theory and practical requirements necessary to safely undertake diving activities in a CDAA defined Cave environment. A Cave site is defined as an enclosed body of water containing overhangs, silt, darkness zones, and passages that are at all times large enough for two divers to swim adjacent to each other and turn around together. Maximum penetration is 1/3 of a twin cylinder gas supply.