What is a calade?

You must have heard the term "calade" while on a stroll. This term refers to a paved road or a cobblestone street. The word "calade" comes from the root "cal" meaning "stone" or "step" but also from "cala" in Provençal meaning "to go down". Some paths and many streets were paved so to facilitate the passing of men and animals, but also to limit erosion. First on slopes, public squares or fountain decorations, then they were paved for reasons of cleanliness.