Disappeared oceans

During the climb towards the refuge, you will see the summits of recent mountain chains like the Alps.Glaciers, water, wind and gravity are the agents of erosion which will gradually break down the mountain reliefs and transfer the eroded materials towards the Mediterranean.In the Maritime Alps, glaciers were the initial agents of active erosion. They have now disappeared and the erosion continues die to mountain streams and rivers which wear away the floors of valleys, the cycles of freezing weather followed by thaws which crack the rocks and the effects of gravity on the steepest slopes.