The Darvaza gas crater (Turkmen: Garagum ýalkymy), also known as the Door to Hellor Gates of Hell, is a natural gas fieldcollapsed into a cavern located in Derweze, Turkmenistan.Geologists intentionally set it on fire to prevent the spread of methane gas, and it is thought to have been burning continuously since 1971. The gas crater has a total area of 5,350 m2. Its diameter is 69 m (226 ft), and its depth is 30 m (98 ft).
