Darvaza gas crater, Karakum Desert, Turkmenistan
This creepy crater lies in the middle of a desert, and although natural, was caused by human intervention. When scientists were drilling for oil in the 1970s, they instead found this natural gas pocket, which ended up collapsing under the weight of their equipment. To use up the natural gas, they set it on fire (a regular procedure) – but the fire never went out due to the unending source of gas. Now, it looks like the gateway to Satan’s place.