This watercolour plate is taken from the album Monuments mégalithiques du Département de la Vienne, made by Le Touzé de Longuemar, a correspondent of the Commission de Topographie des Gaules (CTG). It contains elevations and plans of dolmens at Villaigre and Loubressac and shows the topography of their surroundings. The highly detailed scale drawings, accompanied by equally detailed descriptions, correspond exactly to what was required by the CTG of its members.