Blue Lake, Volcanic crater lake in Mount Gambier, Australia.
Blue Lake fills an extinct volcanic crater in Mount Gambier with water reaching depths of 75 meters. The body of water occupies a substantial area and offers views from multiple points around its shore.
The crater formed approximately 4,300 years ago during the most recent volcanic activity on mainland Australia. This geological past shaped the landscape that exists today.
The Boandik people named this water body Warwar, a name now officially recognized alongside Blue Lake since 2022. This connection between the lake and the local community remains part of how the place is understood today.
A walking path of about 3.6 kilometers circles the entire lake with multiple viewpoints positioned along the way. The route connects easily to nearby parks and recreational areas for a full day of exploration.
The water shifts to a bright turquoise blue each November and keeps this color until returning to its normal shade in late February. This yearly color change remains a puzzling natural occurrence that intrigues many who visit.
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