First the glaciers, then the brooks have shaped the breathtaking rock formation from the 200 million year old lime deposits of a prehistoric ocean. The steep rock faces afford detailed insight into the geology of the Jurassic folding.
The regional climate of the "Creux du Van" is exceptional and unusual - there are forests and arctic-alpine flora in the rock arena. Chamois, ibex, lynx and numerous other wild animals inhabit the pristine natural landscape, which is protected through the existence of a 25 square kilometer nature reserve. A spring, the "Fontaine Froide", has its source in the middle of a sinkhole. This spring's water is four degrees Celsius throughout the year.
AccessOn foot: from Noiraigue
By car: from St-Aubin, Couvet or Travers by a tarmac road to the Restaurant du Soliat (becoming narrower at the end). The Creux du Van rocky cirque is approximately 300m on foot from the restaurant.