Salavas again fell into the hands of the Catholics, and was held by M. de la Chadenède in 1628, with forty-five men against the Duke de Rohan, head of the Calvinists, at the head of 500 men, 200 cavalry, two cannon, and a body of sappers and miners. Salavas was not taken till 200 of the assailants were killed and wounded. The castle, though in ruins, still has portions of its walls and a gate intact. Le Tour du Moulin, mentioned above, is built on a rock in the middle of the river, and was the key of the passage. It was captured by the Huguenots in 1570 by artifice. The small Catholic garrison one evening saw a train of women leading mules with sacks of corn come down to the waterside. The garrison at once went over to assist them in unloading. But scarcely had they left their boat than they were fallen upon. The women were, in fact, Huguenot men disguised in female attire. They shot down every one of the soldiers and took possession of the tower. [Illustration: LE PONT DE L'ARC] Before reaching the Pont de l'Arc the cañon begins; rocky walls, grey, yellow, and fawn colour, stand up above the river, leaving no space between them but for the river; the road has been cut in cornice in the rock above it. The caves of the Bear, the Temple, and the Pulpit are but some of the thousands that open in cliffs that are honeycombed with them. The two latter were employed for meetings during the time of the revolt of the Camisards. The Prophetess Isabeau, clothed in white and wearing a gold circlet on her head, here went into ecstasies and harangued the insurgents, bidding them slay and spare none of the Philistines, and promising to them invulnerability. A little further down is the Goule de Foussoubie, a stream that issues from the rocks just above the level of the Ardèche. The water that feeds it consists of seven rills on the Causse, three miles distant, that plunge into a pot-hole and disappear. Various attempts have been made to follow the underground course, but all have failed and one ended fatally. In dry weather very little water issues from the Goule, but it comes forth in volumes after a storm.