Sylvie Vacheron manages Le Clos du Caillou with an expert hand. The vineyard was indeed once a clos, or walled plot, of 17 hectares but today the vines are planted across 53 hectares in the Côtes-du-Rhône and Châteauneuf-du-Pape appellations. The terroir is of a very high quality, primarily comprising sand and galets roulés with excellent filtering properties. Sylvie Vacheron runs the vineyard and cultivates it with loving care. The soil is enriched with organic compost, the plots are tilled regularly, herbicides are avoided completely and harvesting is manual. Sylvie's determination has paid off as this is now one of the top domains in the appellation.