There’s a gas crater in Turkmenistan that looks like this and has been called the “Portal to Hell.”

The Darvaza gas crater measures 60 meters wide and 20 meters deep in the heart of the hot, expansive Karakum Desert in Turkmenistan. It's been on on fire for the last 38 years as the result of a Soviet gas exploration accident that occurred in 1971.

On a dark night, the glow of the burning hole can be seen from miles away, and the smell of burning sulfur can be detected from a distance and becomes quite strong as you near the hot edge of the crater.