Little Blue Lake

Skip the massive lake you aren't allowed to touch—point your wheels 18 kilometers out of Mount Gambier to 'Baby Blue.' A perfectly circular volcanic sinkhole carved right into the South Australian karst landscape. Forget manicured facilities. This is raw, cenote-style swimming. Sheer limestone walls drop straight into crystal-clear, cobalt water. Cave divers and cold-plunge purists make the pilgrimage specifically for those striking 45-meter depths and the crisp, unwavering 12°C chill. It’s wild, bottomless, and instantly refreshing. A sturdy set of stairs leads down to a floating pontoon—ideal for launching an inflatable ring or just taking the plunge. Hit it on a blazing summer day when the sun strikes the surface, illuminating brilliant turquoise hues. Pure, unfiltered aquatic adrenaline.