In 1971, Soviet geologists punched through the crust of the Karakum Desert about seven kilometers (four miles) outside of the little village of Derweze, Turkmenistan. They were searching for natural gas, and did they ever find it.
The drilling rig hit a large natural cavern filled with gas, which promptly collapsed, taking down the rig and possibly some of the geologists as well, through those records remain sealed. A crater approximately 70 meters (230 feet) wide and 20 meters (65.5 feet) deep formed, and began spewing methane into the atmosphere.
Even in that era, before concerns about methane's role in climate change and its potency as a greenhouse gas had hit world consciousness, it seemed like a bad idea to have poisonous gas leaking from the ground in huge quantities near a village. The Soviet scientists decided that their best option was to burn off the gas by lighting the crater on fire. They accomplished that task by tossing a grenade into the hole, anticipating that the fuel would run out within the week. That was more than four decades ago, and the crater is still burning. Its glow is visible from Derweze each night. Fittingly, the name Derweze means "gate" in the Turkmen language, so locals have dubbed the burning crater the "Gate to Hell." Although it is a slow-burning ecological disaster, the crater has also become one of Turkmenistan's few tourist attractions, drawing adventurous souls out into the Karakum, where summer temperatures can hit 50ºC (122ºF) without any help from the Derweze fire.
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