Serenely located beneath a rural farming property only 15 minutes from Mount Gambier, 'Kilsby Sinkhole' is world-renowned as one of the best sinkhole dive sites due to its crystal clear water and breathtaking visibility. Kilsby Sinkhole is the only site of its kind that welcomes snorkellers, freedivers and Open Water certified scuba divers under the supervision of a licensed and industry qualified guide. Kilsby Sinkhole is also home to Sinkhole Gin, produced from crystal clear limestone-filtered water and local native botanicals. Snorkelling and Sinkhole site tours (incorporating gin tastings) are achievable by prior arrangement only. Instant bookings can be made online. Scuba and Free diving must be arranged with one of our registered Licensees of the the site ( a list of these are on our website , bookings for these experiences are made though these licensees only.) All equipment is provided and water activity is completed under the supervision of an industry-certified guide.