Ancient oracles approached the ancient portal and received hallucinations and visions from the noxious fumes belching forth, reports Discovery News:
A “gate to hell” has emerged from ruins in southwestern Turkey, Italian archaeologists have announced. Known as Pluto’s Gate — Ploutonion in Greek, Plutonium in Latin — the cave was celebrated as the portal to the underworld in Greco-Roman mythology and tradition.
Historic sources located the site in the ancient Phrygian city of Hierapolis, now called Pamukkale, and described the opening as filled with lethal mephitic vapors. “This space is full of a vapor so misty and dense that one can scarcely see the ground. Any animal that passes inside meets instant death,” the Greek geographer Strabo (born 64/63 BC) wrote.
The site revealed a vast array of broken ruins once it was excavated. The archaeologists found Ionic semi columns and, on top of them, an inscription with a dedication to the deities of the underworld — Pluto and Kore.