Deathly breath of the Greek god: Ancient ‘gate to hell’ still emitting poison gas centuries after mysterious deaths

Scientists studying an [Greek] ancient site in Turkey, once thought to be a gate to hell, have found that the deaths recounted at the stone grotto in historical texts were most likely caused by noxious natural gas.


The Ploutonion at Hierapolis, or Hades’ Gate – said to contain the deathly breath of the Greek god of the underworld – is located in modern day Denizli, Turkey.

Its existence was confirmed in 2013 by Italian archaeologist Francesco D’Andria. Now researchers have found that the Roman-Greco grotto in the ancient ruins of Hierapolis emits concentrated levels of CO2, perhaps giving a scientific reason for unexplained fatalities at the site.
  RT
 19/2/18