Small cave in the woods, with engravings, in homage to Samuel Adam-Salomon - French sculptor of the 19th Century who spent most of his life in Fontainebleau. His works are …
La Caverne des Brigands was dug at Denecourt's request in 1844, in order to attract tourists! He then invents a story of brigands from scratch to arouse the curiosity of visitors.
The cave of the oath is quite surprising, especially because the vault is made of a single rock. The letters D.F.D were engraved on the cave by Denecourt himself and mean "Last Madness Denecourt".