The Dentelles de Montmirail were formed by the sea over 200 million years agoRising to 630m at the Rocher du Turc, they are a rich example of geological history. They are a combination of long periods of sedimentation and of the tectonic period. Situated on the fault known as the « Nîmes-Fault », the Dentelles mountain range emerged at the same time as the Pyrenees mountain and the Alps.
This geological phenomenon is very rare in the Rhône Valley. The resulting soils produce structured and unique terroirs for very complex wines.