One of the most interesting things in Provence is actually not highlighted by the sun: it takes place inside a quarry in the Carrières, a chain of hills called the Alpilles. It is a showcase of impressionist artists - and their take on the light that makes the Mediterranean such a compelling part of France. In the cave of this quarry, the paintings of Monet and Renoir, Signac and Cross, the Fauves, with Camoin, Derain, Vlaminck, Friesz, Manguin, Marquet, Chagall and Valtatare are all projected onto the surfaces of the vast scaling rock (ceiling above you, floors below and all other surfaces). The images swirl and move and overwhelm you as you stand there or move above, beneath in around them. Meanwhile, music by Ravel, Debussy, Gershwin gales through the space. Colette kept swooning, "wow" - eyes wide open, head tilted in all directions. We wandered through the endless quarry entranced.