sentences:  It is bounded on its south side for about 4 km by the Rizonne stream, which separates it from the neighbouring communes of Saint-André-de-Double and Saint-Vincent-de-Connezac.The soil is composed in part of Eocene and Oligocene sands, clays and gravels, and in part of chalk of the Campanian period.The commune's lowest point, at 73 m, is to the south-west where the Rizonne leaves the commune for Vanxains and La Jemaye.