This place is one of the most dark and ominous of places here. The higher into the mountains you go, the more the noxious fumes will start to eat away at you. At one point, it was a beautiful place where at the top the gateway to Heaven lie. This is how the Angels were sent to Earth. However, during a war, the gateway was destroyed - leaving Angels stranded on Earth and starting the age where Angels had to hide among the humans, never to reveal themselves.
What remains at the top of the mountain is hardly even recognizable as a gateway except for a few stone steps leading to the edge - a now popular place for demons to bring sacrifices.
Travelling further into the mountains, there is a cave. This cave nobody enters - except for Demons. Inside there is The Pit. Darker than anything else on Earth, this is the gateway to Hell. Often times, this is where Demons bring humans, babies, and others they wish to kill. This way it is assured they will reach Hell instead of Heaven.
There is no certainty of what happens when a human dies anywhere else. There is no way of knowing if they reach Heaven, or if all there is left is Hell. However, humans have kept their faith that there is somewhere better.