A new road leads from Pont de Montvert to Florac by the valley of the Tarn; a smooth sandy ledge, it runs about halfway between the summit of the cliffs and the river in the bottom of the valley; and I went in and out, as I followed it, from bays of shadow into promontories of afternoon sun. This was a pass like that of Killiecrankie; a deep turning gully in the hills, with the Tarn making a wonderful hoarse uproar far below, and craggy summits standing in the sunshine high above. A thin fringe of ash-trees ran about the hilltops, like ivy on a ruin; but on the lower slopes, and far up every glen, the Spanish chestnut-trees stood each foursquare to heaven under its tented foliage. Some were planted, each on its own terrace no larger than a bed; some, trusting in their roots, found strength to grow and prosper and be straight and large upon the rapid slopes of the valley; others, where there was a margin to the river, stood marshalled in a line and mighty like cedars of Lebanon. Yet even where they grew most thickly they were not to be thought of as a wood, but as a herd of stalwart individuals; and the dome of each tree stood forth separate and large, and as it were a little hill, from among the domes of its companions.