Lac Vert (Green Lake)

This lake of extraordinary colour was most likely formed when the Dérochoir ( Fiz ridge to the north) collapsed in 1471.
There are several explanations for its emerald green colour, including the surrounding vegetation, most of which consists of spruce trees that are reflected in the water. But the presence of blue-green algae or cyanophyceae in the lake is also a likely cause.
The water originates from springs that irrigates the lake from both the surface and the deep depths.