An entire literature of visions depicting the torments of hell was soon produced by the industry of the monks. The apocryphal Gospel of Nicodemus, which purported to describe the descent of Christ into the lower world, contributed to foster it; and St. Gregory the Great has related many visions in a more famous work, which professed to be compiled with scrupulous veracity from the most authentic sources,(448) and of which it may be confidently averred that it scarcely contains a single page which is not tainted with grotesque and deliberate falsehood. Men, it was said, passed into a trance or temporary death, and were then carried for a time to hell. Among others, a certain man named Stephen, from whose lips the saint declares that he had heard the tale, had died by mistake. When his soul was borne to the gates of hell, the Judge declared that it was another Stephen who was wanted; the disembodied spirit, after inspecting hell, was restored to its former body, and the next day it was known that another Stephen had died.(449) Volcanoes were the portals of hell, and a hermit had seen the soul of the Arian emperor Theodoric, as St. Eucherius afterwards did the soul of Charles Martel, carried down that in the Island of Lipari.(450) The craters in Sicily, it was remarked, were continually agitated, and continually increasing, and this, as St. Gregory observes, was probably due to the impending ruin of the world, when the great press of lost souls would render it necessary to enlarge the approaches to their prisons.(451)