OeschinenSee.

Wish you a serene week:)
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Oeschinensee is a lake in the Bernese Oberland, Switzerlan.. At an elevation of 1,578 metres (5,177 ft), it has a surface area of 1.1147 square kilometres (0.4304 sq mi). Its maximum depth is 56 metres (184 ft).
The lake was created by a giant landslide and is fed through a series of mountain creeks and drains underground. The water then resurfaces as the Oeschibach.