At the time, this multiple drowning was the worse in cave diving history in the world, and its repercussions caused a great deal of self-examination by diving clubs throughout the country.  October 1972 long weekend saw a large Adelaide Dive Club run a trip to Mt. Gambier to dive various sinkholes.  Four divers entered a cave, without a guideline and adequate equipment, the silt was stirred up transforming the clear water into impenetrable back within minutes.  The group became disoriented, three divers drowned and one only just made it out before running out of air.