Limestone mountain range that formed itself 145 million years ago, the Séranne mountain range is impressive thanks to its gigantic silhouette. That 25km-long natural limestone barrier peaks with the Roc Blanc at 942 meters above sea level. The Séranne moutain range is a noteworthy element of the Languedoc's landscape, thanks to its cirque, its cliffs and its slender reliefs. This dry landscape, which is typical of the Mediterranean climate, offers a vast stretch yet untouched by human activities. The low vegetation is essentially composed of scrubland with, in particular, box trees and holm oaks.