It is an awful thing to think of the enormous caverns that are entered from some Roman churches, and under- mine the city. Many churches have crypts and subterranean chapels of great size, which, in the ancient time, were baths, and secret chambers of temples, and what not; but I do not speak of them. Beneath the church of St. Giovanni and St. Paolo, there are the jaws of a terrific range of caverns, hewn out of the rock, and said to have another outlet underneath the Coliseum—tremendous darknesses of vast extent, half-buried in the earth and unexplorable, where the dull torches, flashed by the attendants, glimmer down long ranges of distant vaults branching to the right and left, like streets in a city of the dead; and show the cold damp stealing down the walls, drip-drop, drip-drop, to join the pools of water that lie here and there, and never saw, and never will see, one ray of the sun. Some accounts make these the prisons of the wild beasts destined for the amphitheatre; some, the prisons of the condemned gladiators; some, both. But the legend most appalling to the fancy is, that in the upper range (for there are two stories of these caves) the Early Christians destined to be eaten at the Coliseum Shows, heard the wild beasts, hungry for them, roaring down below; until, upon the night and solitude of their captivity, there burst the sudden noon and life of the vast theatre crowded to the parapet, and of these, their dreaded neighbours, bounding in!
Below the church of San Sebastiano, two miles beyond the gate of San Sebastiano, on the Appian way, is the entrance to the catacombs of Rome—quarries in