Tucked inconspicuously on a rural farming property 15 minutes outside Mount Gambier lies a magical underwater world. Descending 60 metres deep into the earth, the Limestone Coast’s Kilsby Sinkhole is world-renowned as one of the best sinkhole dive sites with crystal clear water and breathtaking visibility. Jump on a scuba diving, snorkelling or site tour and explore this serene underwater wonder with a qualified guide.