The forest of Fontainebleau, especially in the vicinity of Barbizon, is famous for its large number of sandstone rocks, forms that erosion has also made amazing and varied. These landscapes made the happiness of the Impressionist painters (see this article in the journey walk), and now are stride by strollers and amateur climbing… These rocks looks like an animal, like an elephant, a dinosaur, a turtle, or in this picture as a beaver that would have been petrified…
