Le Castellas walks

From the Pont Saint-Nicolas de Campagnac and its priory, a loop takes you through part of the Gorges du Gardon. You can admire the meandering Gardon, the Grotte de la Trône (an ancient prehistoric shelter with drawings of mammoths and a feline dating from the Upper Palaeolithic behind a closed iron door), the Baume Percée, seen from above and below, the climbing cliffs at Russan...