Mt. Gambier

Mount Gambier is the home of The Blue Lake (Town water supply you cant just go diving in it) which is a flooded, volcanic crater which is on average 80 m deep with a rumoured deep section of more than 200 metres (see photo). The surrounding countryside is thick limestone pitted with sinkholes and cave entrances. The shallow water table means several dozen of them are diveable. There are even caves running underneath the town itself where you can cavedive (ie Engelbrechts Cave).

The sinkholes are generally deep (40-70m), dark and cold (14-16C). Some have crystal clarity while others are like soup that changes consistency between seasons. The most amazing sinkhole has to be The Shaft which was dived by Sheck Exley in the late 90’s to in excess of 80m. Efforts in The Shaft during recent years on trimix have discovered massive deep tunnels at -125m but they have been terminated. Tank Cave is the prize of cave divers in the region and has in excess of 7km of surveyed phreatic maze passage.

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Dive Locations in Mt. Gambier

Max’s Hole

CAVE/KARST FEATURE NUMBER: 5L100 MAXS HOLE (Maxs ‘R’ Hole; perhaps Glenny Heights Cave). By Peter Horne Named by divers after a previous landowner, Mr. Max Heininger, Max’s Hole (or Max’s “R” Hole as it was sometimes known by the less-cultured members of the cave diving fraternity!) is a single chamber which is accessed via two … Continue reading Max’s Hole

06/04/2017 20:56 hrs
by
trimixguy

The Three Sisters

CAVE/KARST FEATURE NUMBER: 5L13 THE THREE SISTERS. By Peter Horne The present-day entrance to The Three Sisters cave is a small, gated roof-window lying inconspicuously beside the sealed Glencoe Mile Hill Road near Tantanoola, a little more than half a kilometre from Highway One. Access to the cavern below is not a simple matter of … Continue reading The Three Sisters

06/04/2017 20:55 hrs
by
trimixguy

The Shaft

Located West of Allendale south of Mt Gambier, The Shaft is an amazing sinkhole that is accessible from the surface (in the middle of a paddock) via a 1m wide solution pipe. Visibility is limited by light source intensity, not water clarity. Reported to be 125m deep, the Shaft is currently Australia?s deepest natural freshwater … Continue reading The Shaft

29/01/2015 06:04 hrs
by
trimixguy

The Pines

“The Pines” (CEGSA cave feature number 5L61), also known by locals as “Springs Cave”, is located west of Mount Gambier. It used to be in a pine forest, but as can be seen from Richard Harris’ photo, the trees have been chopped down now. “The Pines” is one of the most popular cave diving sites … Continue reading The Pines

29/01/2015 06:04 hrs
by
trimixguy

The Blue Lake

29/01/2015 06:03 hrs
by
trimixguy

Tank Cave

Some photos of the entrance of tank cave. The circular loop and orange board are part of the “thumper system” (radio locating system which we are using to map/survey Tank Cave. Also a photo of John Vanderleest (in the yellow) and John Dalla-Zuanna getting ready to descend into the cave. This is the same unit … Continue reading Tank Cave

29/01/2015 06:03 hrs
by
trimixguy

Piccaninnie Ponds

Located closer to the coastal town of Nelson than Mt Gambier, Piccaninnie Ponds is one of the most beautiful sites, jest a few hundred meters from the beach, with crystal clear fresh water, eels, turtles and schools of freshwater fish. Diving at night in this site is a memorable experience. The unassuming ?pond? disappears into … Continue reading Piccaninnie Ponds

29/01/2015 06:03 hrs
by
trimixguy

One Tree Sinkhole

One Tree Sinkhole , also marked on maps as Lake Wurwurkooloo, is on the same property as Ela Elap. Maximum depth about 50m, has a car wreck in about 41m and an old harvester in 38m. Silty bottom, lots of yabbies. (Be sure to check site access protocols with local cave divers before diving this … Continue reading One Tree Sinkhole

29/01/2015 06:02 hrs
by
trimixguy

Nettle Cave

Nettle Cave 5L186 and its new discovery P & D Funda dived the “Back Section” as shown on the original map from Peter Horne’s Lower South East Cave Reference Book, and a small tunnel (“Andrew’s” tunnel) to its bottom at -19m. Next day (Sunday, September 1) we dived the Nettle Cave again and noticed a … Continue reading Nettle Cave

29/01/2015 06:02 hrs
by
trimixguy

Nettle Bed Cave

NETTLE-BED CAVE (CEGSA Inc. Reference 5L290) Nettle-Bed Cave (South Australia) was discovered and named by Grant Pearce and Chris Murphy in January 1990. It lies at the opposite end of the doline which contains Mud Hole, in what was until recently a large pine forest. Early dives required divers to work their ways through the … Continue reading Nettle Bed Cave

29/01/2015 06:02 hrs
by
trimixguy

Mud Hole (SA)

Mud hole is in the same (ex) pine forest as Pines and Iddlebiddy Cave, and lies in the same doline as Nettle bed. The water in mud hole is crystal clear… until you get in. The bottom is covered in thick, black, sticky mud, hence the name. It?s practically impossible to get in the water … Continue reading Mud Hole (SA)

29/01/2015 06:02 hrs
by
trimixguy

Kilsbys Hole

29/01/2015 06:01 hrs
by
trimixguy

Little Blue Lake

by Paul Hosie. Little Blue Lake is a generally used as a sinkhole training site. It is located due south of Mt Gambier on the side of the road and access is open and free. There is heaps of rubbish in the bottom of the hole which is some 35m deep. There are some undercuts … Continue reading Little Blue Lake

29/01/2015 06:01 hrs
by
trimixguy

Kilsbys Hole

29/01/2015 06:01 hrs
by
trimixguy

Hell’s Hole

Hells Hole(5L40) This sinkhole is located in thick bush to the East & South of Mt Gambier. It has a path leading to its edge, but no vehicular access. Vehicles are parked on the bush track some 70m from the sinkhole?s edge. The sinkhole entrance is about 40m in diameter and a 30m vertical pitch … Continue reading Hell’s Hole

29/01/2015 06:01 hrs
by
trimixguy

Gouldens Hole (Goulden Waterhole)

GOULDENS HOLE (CEGSA Reference 5L008) Once known simply as the “sinkhole in the middle of the road”, Gouldens Hole was named after an adjacent landowner, Mr. Reginald H. Goulden, who purchased the property immediately to the east of the sinkhole in 1949 through the Soldier Settlement Scheme. Mr Goulden leased it from the Lands Department … Continue reading Gouldens Hole (Goulden Waterhole)

29/01/2015 06:00 hrs
by
trimixguy

Fossil Cave

Fossil Cave (5L081) is a small, shallow double sided doline that goes to water on each side. The eastern side has the large chamber down to 10m and is exceptionally pretty. The silt mound there has revealed fascinating treasure deposits of ancient fossil bones (if that’s your thing !), hence the site’s name. At the … Continue reading Fossil Cave

29/01/2015 06:00 hrs
by
trimixguy

Ewen’s Pond

Ewens Ponds is a beautiful series of ponds distributed over several hundred metres with strong flow running from pond 1 to 2 to 3 through a series of narrow channels (‘Races”) which eventually flows into the sea some 2-3km distant. It is located on the coast road between Port MacDonnell and Picanninnie Ponds. The water … Continue reading Ewen’s Pond

29/01/2015 06:00 hrs
by
trimixguy

Engelbrechts Cave (West)

Engelbrechts Caves (East and West) lie in the heart of the town of Mt Gambier and are accessed via the same path that the tour guides follow into the site. Engelbrechts Cave (West) Once entering the pool, you drop through a small restriction into low flattened tunnel which is approx 100m in length. Here you … Continue reading Engelbrechts Cave (West)

29/01/2015 05:59 hrs
by
trimixguy

Engelbrechts Cave (East)

Engelbrechts Caves (East and West) lie in the heart of the town of Mt Gambier and are accessed via the same path that the tour guides follow into the site. The East cave (a cave rated site) is shown in these images. An early flattener with a dark silt base tests trim and bouyancy and … Continue reading Engelbrechts Cave (East)

29/01/2015 05:59 hrs
by
trimixguy

Ela Elap Sinkhole

This sinkhole is located on private property (a cattle farm) South & West of Mt Gambier. Vehicles are parked next to the sinkhole and a 20m stroll has you in the freezing water ! The sinkhole is about 40m in diameter and 50m deep. The water is a chilly 11C and the bottom has good … Continue reading Ela Elap Sinkhole

29/01/2015 05:59 hrs
by
trimixguy

Dave’s Cave

Dave’s “Secret” Cave (5L215) by Petra Fundova & David Funda This small cave is well hidden in a pine forest south of Kongorong, not far away and north from Port MacDonnell Road. It was originally described in Peter Horne’s Lower South East Cave Reference Book from his and Mark Nielsen’s dive there in 1982, with … Continue reading Dave’s Cave

29/01/2015 05:58 hrs
by
trimixguy

Allendale Sinkhole

This cave is located in the middle of the road in the town of Allendale south of Mt Gambier. The roads north & south actually split to go around the cave entrance. A small tunnel (approx 5m diameter) follows the rock & rubble slope to the North West down to a depth of some 28m … Continue reading Allendale Sinkhole

29/01/2015 05:57 hrs
by
trimixguy

Wet Caves and Shipwrecks Australia