Situated 15 km south of Penong on the way to Point Sinclair lies the beautiful pink salt lake known as Lake McDonnell.
High in salt concentration, the lake gives the impression of a salmon pink lake on clear days. One side of the causeway is Pink Lake, the other side is Green Lake and further down over the small bridge is the Blue Lake.
The Pink Lake is caused by salt loving algae called dunaliella salina and bacteria called halobacteria that secrete carotenoid red pigments, that turns the water bright pink.
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