Lake Cauma, which formed on the landslide mass of the early Holocene Flims landslide, is fed to 70-90% by groundwater.
The turquoise-blue sea colour is probably produced by finely distributed mineral suspended matter and not by algae.

A very intense sunset with some very special coloured clouds I could witness this March in Zürich. It only lasted some minutes and after that the effect was gone. During that time nearly everybody around me was standing there and taking photos with his/her smartphone.
Rolf Enderes Photography
Landscape, Travel, Fine Art, Portrait

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