Le Clos du Caillou is a 110-acre estate in the commune of Courthezon, in the Cotes du Rhone appellation of France’s Rhone Valley. In addition to the acreage in Cotes du Rhone, the estate has 23 acres in the Chateauneuf-du-Pape appellation. The estate has been owned by the Pouizin family since 1956, and is now run by Sylvie Pouizin. Le Clos du Caillou’s flagship wines are its Chateauneuf-du-Papes, which are blends of Grenache and Mourvedre. Also produced are white Chateauneuf-du-Papes made of Roussane, Clairette and Grenache Blanc.