Viewpoint over Mont Fier

Mont Fier seems to defy the rules of morphology set by the Jura relief. By its very definition, a mountain is comprised of an anticline (a fold that is convex upwards) and a synclinal valley (a fold that is convex downwards). However, on observing the limestone strata that make up Mont Fier’s cliff, there are signs of a very shallow syncline. This rocky headland, isolated between two depressions, is the only example of a perched syncline in the Jura.