Blue Lake is the best example of a glacial lake in the alpine area. At 28m deep, this lake was formed when glaciers, flowing from the Great Dividing Range, converged and carved out a basin in the rock. This is visible in the cliffs behind the lake, where the glaciers have plucked out blocks of stone and carried them away. There is also a stream that flows from Blue lake, feeding Hedley Tarn just to the south.
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