Emerald Lake, also called Rainbow Lake by Yukoners. The rainbow like colors of the lake result from blue-green light waves reflecting off of the white sediment of the lake bottom. Thjis white sediment, called marl, consists of fragments of decomposed shell mixed with clay; it is usually found in shallow, freshwater lakes that have low oxygen levels during the summer months.
This was on our drive from Whitehorse in the car down to Skagway, AK. It was only 110 miles to Skagway from Whitehorse.
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