24 Amazing Unknown Places You Never Knew Existed

15. Dare to look down The Door to Hell in Derweze, Turkmenistan: This natural gas field known as The Door to Hell or The gateway to hell is something out of the ordinary. This caverned collapsed in 1971, geologists then set it on fire to avoid the spread of methane gas and since then it just keeps burning continuously. Since then, it has become a unique place to visit. Dare to get near this crater for a good selfie?