Tens of millions of years ago, the same tectonic collision that formed the Pyrenees created the Dentelles de Montmirail in the western foothills of Mont Ventoux in southeast France, powerful geological forces thrusting a portion of the Earth’s crust upwards until layers of Jurassic limestone were near-vertical.

Today, sat in a dimple on the northern side of the range, is Chêne Bleu, a winery housed in a ninth-century priory.