Uzbek gates of hell

This place in Uzbekistan locals call the "Gates of Hell". It is located near the small town of Darwaz. The history of the place center began 35 years ago after geologists began to drill wells here in search of gas. Suddenly during the drilling they have found an underground cave. One of them was so big that all the drilling rig and camp with all equipment turned deep underground. No one dared to go down, because the cave was filled with a gas, which immediately broke out. And for the past 35 years without any pause gas continues to burn. No one knows how many cubic meters of gas has been burned for all those years ...