by five pairs of massive stones, leaning against each other by their tops. A number of rough granite blocks had been piled on the roof. Some of these blocks have rolled off. Those that remain have a layer of small stones and lime between them and the roof. They help to make the grotto look like a natural cavern. The western entrance of the grotto was closed by a wall with a door in it, of which parts
remain. The eastern end, resting against the mountain, was not so completely closed but that light could penetrate. The floor, though artificially raised, was not paved. As the ravine widens in descending, the grotto widens also. At the west entrance it is about 16 ft. broad: at the back, only 7 feet 8 inches. From the top of the roof (inside)
