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| Illuminating: The hole in Derweze, Turkmenistan, is 70 metres wide and the flames within light up the sky |
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| Light show: A spectacular view of the flames burning inside the crater in the heart of the Karakum Desert |
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| Hot: A closer view of the fire inside the hole, which locals have named 'The Door to Hell' |
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| Fiery: The blaze began when geologists decided to burn off natural gas they discovered while drilling at the site |
