About French Grotte de Lascaux. Cavern containing one of the most extraordinary presentations of ancient workmanship yet found. Situated over the Vézère River valley close Montignac, in Dordogne, France. The cavern is a short separation upstream from the Eyzies-de-Tayac arrangement of caverns. Lascaux, together with around two dozen other painted caverns. 150 ancient settlements in the Vézère valley, was assigned a UNESCO World Heritage site in 1979.