 To the south, exploiting a geological fault is the River Tarn which is at 265 m altitude, and to the south of the river the land rises again to over 600 m. The area is called Les Raspes de Tarn- 30 km to the east is the A75 autoroute and the Viaduc de Millau which crosses the Tarn and Dourdan at the level of the plateau.Further east is the town of Millau and the Karst landscape of the Gorges du Tarn.The impervious granites of the Lévézou make this a suitable location for water capture.