Pink Lake (historically known as Lake Lochiel) is a small, circular, salty pink lake on the Western Highway just north of Dimboola, Australia. Granville Stapylton, part of the explorer Thomas Mitchell's 1836 expedition into western Victoria, reconnoitered Pink Lake on 20 July 1836.
The lake received its name from its distinctive pink colour. The brightness of the hue varies according to the level of rainfall. Until recently it was assumed that red algae created the pink hue; however, recent research reported by Australian Geographic describes the colour as result of a pigment produced by the Salinibacter ruber bacteria.
