The dreams produced were often the result of inhaling a gas that escaped in some of the caves, or through fissures in the floors of the temples. At Hierapolis in Phrygia was a cavern of Cybele. At the close of the fifth century, when the temple of the goddess had been completely abandoned through the interdiction of paganism, the philosopher Damascius, who had remained faithful to the old beliefs of his country, descended, along with a companion, into the Charonion in spite of the danger attending it, or was supposed to exist. He came forth safe and sound, according to his own account, but hardly had he reached his home before he dreamt that he had become Attys, the lover of Cybele, and that he assisted at a festival held in his honour. There were other such caves. In the visions seen by those sleeping in them, the divinities of healing appeared and prescribed the remedies to be taken by those who consulted them. Pilgrimages to these resorts-- temples and caves of Æsculapius, Isis, and Serapis, were common events. Those who desired to consult Serapis slept in his temple at Canope. When Alexander was sick of the malady whereof he died, his friends went thither to learn if any cure were possible. "Those who go to inquire in dream of the goddess Isis," says Diodorus Siculus, "recover their health beyond expectation. Many have been healed of whom the physicians despaired." The temples were hung with ex-votos. At Lebedes, in Lydia, the sick went to pass the night in the temple of the Soteri, who appeared to them in dreams. It was the same in a temple in Sardinia. So also in one of Ino in Laconia. In the Cheronese, the goddess Hemithæa worked the same miracles as did Isis. She appeared in dream to the infirm and prescribed the manner in which they might be healed. In the Charonion of Nyssa it was the priest who consulted the gods in dream. In the temple of Æsculapius near Citheræa, a bed was always ready for incubation. Christianity could not uproot so deeply founded superstitious convictions and practices.