About the site Kilsby’s is a Deep Cavern site in the Mt Gambier region, reaching depths of 60m in the back corners. It’s renowned for the crystal clear water normally only found under a roof, as sunshine in freshwater encourages algal growth. The daylight zone is huge, and you can look across a space the size of a football field and watch divers hanging out on the far side. The centre of the sinkhole comes up to under 20m depth, and as it gets deep on each side you swim under a roof, and can look back from the dark into the daylight. About the dive On this particular occasion, KA and I had already done two dives in Piccaninnie [read more…]