Piranesi's Carceri

...."Many years ago," he wrote, "when I was looking over Piranesi's Antiquities of Rome, Mr. Coleridge, who was standing by, described to me a set of plates by that artist, called his Dreams, which record the scenery of his own soul during the delirium of a fever.....enclosed spaces in which wander aimlessly or deliriously the wraiths of damned men, not a whit less wretched nor awful than Dante's immemorial mob