The mountains of the Vivarais are the finest portion of the Cévennes, so noble are their outlines, so deep are the clefts that seam them, so tumbled is the aspect of range heaped on range; and they are supremely interesting on account of the volcanic vents that remain in good preservation, and the wondrous walls of prismatic basalt that line the rivers. The Ardèche is certainly the most extraordinary river in Europe; after leaping, and burrowing, and sawing its way through basalt, it passes down a cleft of lias disposed in beds completely horizontal, and rising like the walls of houses. In fact, it traverses a long white street, many miles in length, and then enters the great ravine between lofty precipices of Dolomitic limestone, where runs no road, and where one must descend in a boat, shooting rapid after rapid in the midst of scenery only rivalled by the noted gorges of the Tarn. It is not necessary to do more than indicate the general aspect of this portion of the Cévennes, to give an outline that may be filled in with details later on. But before quitting this department, I must quote some words of Mr. Hammerton, no mean judge of landscape:— "The department of Ardèche on the right bank of the Rhône is but little visited by tourists, and does not contain a single mountain whose name is known in England. It is natural that the hills of the Ardèche should be little known, as the fame of them is extinguished by the Alps; yet they are highly picturesque and full of geological interest. As to the altitudes, they are not considered high mountains in France, but there are twelve of them that exceed Ben Nevis." The volcanic region of Mézenc and the Coiron to the east of the granitic plateau separates the southern from the northern Cévennes. The first volcanic cones are met with immediately north of Mont Tanargue (4,785 feet). The southernmost is the Coupe de Jaujac. There are six of these volcanoes lying at the foot of the granite plateau, but they are insignificant in comparison with those of the principal range, which forms the watershed between the Loire and the Rhône, in the centre of which range is the three-toothed Mézenc, surrounded by subsidiary cones, among which is the Gerbier de Jonc (5,090 feet), which was 5,610 feet high before a landslip occurred in 1821, that reduced its height. On the flank of this mountain rises the Loire. The department of Gard takes it name from several Gardons, a name as common in this part of the Cévennes as Gave is in the Pyrenees. We are now in the midst of the Camisard country, an inextricable network of mountains of lacerated schist and of deeply furrowed valleys, in which the revolted Cevenols held at bay the armies of Louis XIV. At the present day the department of Gard contains more Protestants than any other in France, and whole villages are entirely Calvinist, with scarce a Catholic in them.