- La Roque Saint-Christophe, fort et cite troglodytiques entre Montignac et les Eyzies (troglodytic town and fortress located between Montignac and les Eyzies), Dordogne, FRANCE ...www.roque-st-christophe.com
- An unrecognized Aquitaine river : le Dropt.Its part in History.Its valley, the valley of the bastides, a secret old-fashioned region.The people:the last peasants .The adventure of its navigation. ...w3.valleedudropt.com