Sandstone and quartzite rocks jutting out and schistous depressions alternate in the Peninsula’s landscapes, they constitute an appalachian-type relief. The big ridges made up of sandstones and quartzites kept on their summit the old erosion surfaces whose horizontality surprises. These flat surfaces are abrasion plateforms elaborated by the sea 2 or 3 million years ago at the end of the Tertiary Era. Cliffs that limit these surfaces are impressive. They reach their highest point at 60 metres in the sector of Camaret, to reach 96 metres at the Cap de la Chèvre.
Picture: a succession of three marine abrasion plateforms on the western coast of the peninsula.