On the city of Nyons and on its heights blows a wind typical of the micro-climate the Pontias. This northern wind is credited with keeping the Nyonsais air fresh and dry. The Pontias legend tells that it appeared when Césaire, bishop of Arles at the beginning of the 6th century, threw his glove against a rock in which he had previously captured a breeze by the sea. Where the glove touched the rock, the earth opened and the wind gushed out, creating the "Pontias hole".