Strabo, Geography

On the road between the Tralleians and Nysa is a village of the Nysaeans, not far from the city Acharaca, where is the Plutonium, with a costly sacred precinct and a shrine of Pluto and Core, and also the Charonium, a cave that lies above the sacred precinct, by nature wonderful; for they say that those who are diseased and give heed to the cures prescribed by these gods resort thither and live in the village near the cave among experienced priests, who on their behalf sleep in the cave and through dreams prescribe the cures. These are also the men who invoke the healing power of the gods. And they often bring the sick into the cave and leave them there, to remain in quiet, like animals in their lurking-holes, without food for many days. And sometimes the sick give heed also to their own dreams, but still they use those other men, as priests, to initiate them into the mysteries and to counsel them. To all others the place is forbidden and deadly. A festival is celebrated every year at Acharaca; and at that time in particular those who celebrate the festival can see and hear concerning all these things; and at the festival, too, about noon, the boys and young men of the gymnasium, nude and anointed with oil, take up a bull and with haste carry him up into the cave; and, when let loose, the bull goes forward a short distance, falls, and breathes out his life.