Australiaのインスタグラム(australia) - 11月24日 20時31分

An incredible aerial perspective of the Blue Lake in #MountGambier - which occupies one of the craters of an extinct volcano. One of @southaustralia's fascinating sights, early each November the lake's sombre colour mysteriously changes to an intense deep turquoise blue almost overnight, which you can see in this beautiful photo by @mrperrycho

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