Pluto's gate was a religious place in Turkey. It was discovered by archaeologists in 1965 and is said to have been a place where many ritual sacrifices were made for the Pluto, the Roman god of the underworld. The place where this was built is quite bizarre. So bizarre that you are not allowed to go there anymore...
Pluto's Gate is built on top of a cave that releases poisonous gases and is seen as a ritual passage to the underworld. Animal sacrifices were common. In the past many people didn't dare to go to the place because they thought it was a dangerous.
Pluto's gate was built around 2nd century BC and has been abandoned since the 6th century AD.
According to a well-known ancient Greek historian, no one could survive there. He wrote that the vapor that came out of the cave was so foggy and dense that you can hardly see the ground. To test how dangerous it was, he threw sparrows inside. The sparrows died immediately.
When an animal ritual took place, They threw the animals down into the cave, after which they lifted the animals up again with ropes that were tied around the body. Today the fumes are still very poisonous. This was discovered when archaeologists kept an eye on the birds that flew by. Many birds were attracted by the heat that the fumes generated. The birds suffocated after breathing in the fumes.
Priests with superpowers
During the early years of the gate's construction, two priests crawled into the cave to prove that they were immune to the gas. This would only have been possible if they held their breath or crawled to air bubbles with oxygen. Carbon dioxide is heavier than air, creating air bubbles. People thought it was a miracle and believed that the priests were infused with superior powers.
Would you dare crawl into a small cave to make it look like you have superpowers? I wouldn't!