Lac de la Petite Cayolle

It is a story of long ago, of the great glaciers which, as they slowly but unstoppably moved, shaped the Alps. Their flow hollowed out softer rocks and smoothened the harder ones, ripping any obstacles out of their way.
10000 years ago, the time of the great blanket of ice and snow came to an end and the glacier began shrinking, leaving behind it great hollows and terminal moraines: the glacial lakes found a home there, like Lac de la Petite Cayolle 3000 years ago.