Ploutonion at Hierapolis

The Ploutonion consists of a natural cave system emitting toxic gases, with ancient stone structures marking the entrance to this mysterious site.

During the Roman period, priests performed rituals at this site, demonstrating their supposed immunity to deadly vapors through ceremonial practices.

Ancient Greeks and Romans considered this location a gateway to the underworld, dedicating the site to Pluto, god of the subterranean realm.

Visitors can explore the excavated remains of the temple complex surrounding the cave entrance, which includes marble columns and ceremonial spaces.

The cave releases carbon dioxide concentrations strong enough to kill small animals, validating ancient accounts of mysterious deaths near the entrance.

Location: Denizli Province

Part of: Hierapolis

GPS coordinates: 37.92667,29.12611

Latest update: May 26, 2025 21:22