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WATCH: This Flaming Crater Has Been Burning For More Than 40 Years

Welcome to the 'Door to Hell'. 

29 JUN 2016

The Door to Hell is just as scary as it sounds. 

For more than 40 years, this natural gas crater in Turkmenistan has been constantly burning - and scientists aren't really sure why. Check out the video above to find out how it caught fire in the first place.

Video produced in partnership with Explorist.

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