It is located in the Tarn department, at the South-Western end of the Massif central, between Lacrouzette, Ferrières, Saint-Salvy-de-la-Balme and Lafontasse, surrounded by the following natural regions : The granite of the Sidobre is a plutonic rock resulting from a Hercynian intrusion dated back (using the Rubidium-Strontium method) to 304 ± 8 Ma.

Originally composed by one single piece of rock, the Sidobre was cracked by the Pyrenean orogeny, thus becoming more exposed to the rhexistasy, which explain the remarkable natural forms and constructions of the site.

The Sidobre is an important zone of quarrying, representing half of the granite production in France, with about 1,200 employees and 100 companies.

Because of competition from China, there has been a steady decrease in the number of quarries since the 1950s, with barely fifteen nowadays, though these have grown bigger.

The site and its environment have been placed under the protection of the Haut-Languedoc Regional Nature Park.