The road from the Grand Arch to the Devil's Coach House is devious and uneven, with occasional fissures in the ground indicating the entrance to new subterranean marvels. To the right is the mouth of a cave yet unnamed and unexplored. A little farther on, high up in the rocky wall which connects the two converging mountains of limestone, is the Carlotta Arch, which resembles a Gothic window in the grand ruins of some venerable monastic pile, fretted and scarred by centuries of decay. Almost immediately after passing the line of the Carlotta Arch, the visitor arrives at the Devil's Coach House, which runs nearly north and south. It is an immense cave, whose proportions are better gauged than those of the Grand Arch, because the light flows in, not only from the ends, but also from the roof. At a height of some 200 feet, it has a large orifice in the dome, fringed with stately trees, the fore-shortening of which from their base upwards is very peculiar as seen from the bottom of the cave. On the floor are strewn about rocks of black and grey marble, smoothed and rounded by attrition, and weighing from a few pounds to many hundredweight. In flood-time the storm-waters dash these rocks against each other with tremendous force, and the roaring of the torrent resounds like thunder through the cave. In such wild seasons blocks of stone a ton weight or more are moved a considerable distance. The walls are partly composed of black marble with white veins, and some of the boulders on the floor contain marks of fossil shells. The most magnificent view of the Devil's Coach House is from the interior of the cave near the northern entrance, from which the rise of the arch appears to be upwards of 200 feet. Its roof is fringed with stalactites, and the outlook is into a wildly romantic gully. Stalactites are suspended from the sides of the entrance, and in several places there are stalagmites covered with projections like petrified sponge, while near to them are formations resembling masses of shells commonly found on rocks by the seaside. Some of these combinations might be examined for hours, and yet leave new and interesting features to be discovered. Small pellucid drops glisten at the ends of the stalactites, illustrating the process of their formation. The large stalactites on the roof and small stalagmites on ledges near the floor of the cave, and _vice versâ_, afford a practical illustration of the theory that where water flows most freely the stalagmites are largest, and where it flows most reluctantly the stalactite formation is the most magnificent. [Illustration: THE NORTHERN ENTRANCE TO THE DEVIL'S COACH HOUSE.]