Cehennemağzi Mağarası

Cehennemagzi Cave - Cehennem Ağzı Mağaraları - Entrance to Hell - Heracles Cave

Useful Information

Location: Karadeniz Ereğli. Follow Istikbal Cd or Istasion Cd north, where they meet trun right into Cehennem Ağzı Mağaraları Sk.
Classification: ExplainKarst cave
Light: electric.
Dimension: L=85m.
Guided tours:  
Address: Cehennem Ağzı Mağaraları Sk, Ereğli, Tel: +90-, Fax: +90-
As far as we know this information was accurate when it was published (see years in brackets), but may have changed since then.
Please check rates and details directly with the companies in question if you need more recent info.


1998 developed for the public.


The name Cehennemağzi means Entrance to Hell, It is named after a legend in the old greek mythologic text called Anabasis, written by Xenophon. He discribes, that Cerberus, the three headed dog which guards the entrance to the Hades, lives in a cave outside of Eregli near Kavakderesi. Herakles aka Hercules, the powerful demi-god, entered the underworld through this cave. The actual entrance to the underworld is located in the second chamber, where a narrow staircase leads down into a dark, 50m wide chamber. There is an underground lake and human traces like paintings.

The road to the cave follows a small valley, the valley of ancient Acheron. It is also called Valley of the Infidels after an old legend. During Byzantine times a Christian resurrection cult used the caves, which were regarded as Infidelsm hence the name. It is not only a legend, as a floor mosaic in the first cave provides may be seen as evidence of their existence.

The city Heraclea Pontica is a Greek colony on the Anatolian Black Sea coast, at the mouth of the river Lycus. It was founded around 560 BC and named after Heracles. It was the birthplace of the philosopher Heraclides Ponticus.