Night sky over the emerald glacier Lake
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Night sky over the emerald glacier Lake

by Masamichi Ohba, Central Research Institute of Electric Power Industry, Abiko, Japan

Lake Louise in Banff National Park, Canada.
The lake at night is very quiet. Travelers can slowly enjoy the starry sky on the lake.
The emerald color of the lake water comes from rock flour carried into the lake by melt-water from the glaciers.