The Luberon: a mountain with a tender heart

On the right, a track lets you follow a little escarpment which highlights the rift in the passage and marks the northern border of a line of hills. The limestone that make up these hills is as old as those of the Luberon ridges. In between, the marly rocks are more recent. These information help in the outlining of the geometry of the Luberon: an asymmetrical arch-shaped bend (anticlinal). The heart of the massive, much more gentle, has been hollowed out by erosion and forms a valley.