This is the infamous death cave triple fatality of 1972. It was Monday the 9th of October, 1972 and the group were traveling back from a diving weekend when they decided to take a quick look at the sink hole which was rumoured to be 20M deep. The four divers entered the water with full tanks, but they left their normal safety guideline in the car. They did this as they didn’t intend to travel far and didn’t believe there were any large underwater expansions heading off from the main entry chamber.