We walked for a 3-hour loop hike marked "Grès d'Annot" . The trail goes through shady woods and forests and, at one point, follows around the side of a sandstone (grès) cliff that dominates the Vaire river valley.
The grès (in Grès d'Annot) is a sedimentary sandstone rock created about 60 million years ago when this area was under the sea. Grains of sand were pressed together under intense pressure and cemented together by a natural silicon or calcium cement. The sandstone cliffs were exposed by several million years of glacial and fluvial erosion.
Source: www.beyond.fr
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-p.jpg&description=Hiking through the sandstone rocks (Grès d'Annot trail) (par Sokleine) "Pin It")
