Formed 200 million years ago, the Rocher de Dabo was classified as a historic site in 1935.
The Rocher once hosted a medieval castle which was destroyed in 1679 by order of King Louis XIV.
The site now hosts a chapel in honor of Saint Léon IX. A first chapel was erected in 1828. But, following bad weather, it was demolished and directly rebuilt in 1889 in its current version.