La Baume, Limestone cliff at the entrance of Sisteron, Provence, France
La Baume is a limestone cliff at the entrance of Sisteron, in Provence, southern France, rising sharply above the town. Its exposed rock face shows visible layers of stone that have been shaped over a very long time by water and erosion.
The cliff has long served as a natural marker at the southern approach to Sisteron, a town historically known as the gateway to Provence. Over the centuries, its caves and overhangs were used as shelters, and local accounts mention hermits who once lived there.
The cliff is easy to reach on foot from the center of Sisteron, with marked paths leading to its base and around the rock. Sturdy footwear is a good idea, as the ground can be rocky and uneven in places.
Seen from certain angles, the rock formation genuinely resembles an open book, with its limestone layers fanning out symmetrically on both sides. This unusual shape is not a coincidence but the result of folding processes in the earth that are especially visible here.
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