Pétrus, one of the world`s rarest and most expensive wines was virtually unheard of 30 years ago. It was only when the Moueix family bought a half share in the property in 1962 that its true potential began to be fully realised. Pétrus is now under the direction of Christian Moueix and oenologist, Jean Claude Berrouet. The 11.4 hectare vineyard is located on a plateau on the highest part of Pomerol in the far east of the appellation. The topsoil and the subsoil at Pétrus is almost all clay (in neigbouring properties the soil is a mixture of gravel-sand or clay-sand) and Merlot flourishes in this soil. Pétrus' vineyard is planted with 95% Merlot.