One of the most famous divination of antiquity is the Necromancy of Acheron, which discovered the Decade of ‘ 60. The Necromancy was dedicated to the God of the underworld. Many believed that the point that the Oracle was the entrance to the underworld.

Necromancy the underground Chamber of the divination had built arches in order to create psychoacoustic phenomena, in absolute peace that prevailed. According to mythology, Ulysses descended to the underworld from the point of the Oracle to meet Tiresias, in order to get an Oracle that will help him return to Ithaca.

The ancient Greeks believed that the dead can predict the future. For this reason they visited the Oracle for oracles in the souls of the dead and not to the gods.