A magnificent curved viaduct crosses the basin of the Luech, carried on two stages of arcades 180 feet above the river to Chamborigaud, the tragic story of which has been told in the preceding chapter. The line traverses the masses of a rock and earth slide from the Montagne du Gouffre, and enters a region of coal-beds. The coal seams can be seen between sandstone in the cuttings for the line. On the right is the donjon of La Tour commanding the abbey of Cendras, burnt by the Camisards, then gorges and smoking cinder heaps, and we arrive at Alais, a neat, pleasant, cheerful town, once the seat of a bishop, situated in a loop formed by the Gardon, with the lofty rock of Rochebelle opposite on the further side of the river. This height was the site of the primitive oppidum of Alesia, or Alestia. The cyclopean walls remain in places fairly perfect, and the enclosure can be traced throughout. Alais never was a Roman city; it was, however, probably a place where the iron mines were worked. A hermitage was there till the Revolution. When the plague raged in Alais in 1721, a Carmelite, Esprit Boyer, worked indefatigably among the sick, and on its cessation obtained leave to retire to this hermitage, where he planted a garden and reared a chapel. On his death another hermit took his place, and he assumed the honoured name of Esprit, but as he was a drunkard he was nicknamed Esprit de Vin. He ran away, carrying with him the chapel bell, but was caught and ordered to return to his hermitage. In 1793 he was denounced as suspect, and some individuals were sent up the height to arrest him. He refused to open to them, and threw stones at their heads and threatened to shoot the first man who entered. They, however, stove in the door with a pole, whereupon Esprit escaped out of a window, but in trying to crawl away unseen fell over the rocks and broke his leg. He was taken to the hospital and died there.