Tank Cave - Cave Diving Australia

Cave Name: Tank Cave
Reference: 5L-230
Cave Area: Lower South East
Description: Named because a water tank used to rest right over the top of the entrance, Tank Cave is an extensive, maze like system with over 8km of diveable passage which makes it one of the longest underwater caves in Australia.
Owner/Manager: Rob Dycer
Access: Via CDAA. Cave leased to CDAA..

The South Australian region near Mt Gambier is known of it’s many sinkholes and caves. One particular cave that stands out amongst the rest is Tank Cave. Tank Cave is probably the most complex and biggest cave system in Australia, with more than eight kilometers of underwater passages. The cave is relatively shallow a max depth around 65ft (20m). This system gets its name from the fact that there used to be a water tank directly over the top of the entrance.

Rumored since the late 1960s as a “cave diving site” of some type, this amazingly extensive feature is today considered by many to be the the best cave diving as far as South Australian cave diving sites

The Tank Cave entrance is on private property and the Cave Divers Association of Australia (CDAA) strictly control access to the dive site. The complicated nature of the cave system, requires a strict familiarization process that allows cave divers to get to know the cave step by step. You must go through this process before you are allowed access to the site, the clear benefit means that every cave diver is very familiar with all the main passages of Tank Cave before they can explore further.