9The Shaft Sinkhole, Mount Gambier, Australia
Located in Mount Gambier, South Australia, The Shaft Sinkhole is one of the most challenging cave diving sites in the world. This submerged cave system consists of deep, narrow tunnels that extend hundreds of meters below the surface. The Shaft is notorious for its intricate network of passageways, which can be disorienting and claustrophobic even for experienced cave divers.
One of the most significant dangers at The Shaft is the potential for silt-outs, where disturbed sediment reduces visibility to zero, making it nearly impossible for divers to navigate. Getting lost in the maze-like passages or running out of air are constant risks. Divers must be highly trained and properly equipped to attempt a dive here.
