The Gate To Hell
Tuesday, November 24, 2009
Just found this online: Derweze, which is Turkmen for "The Gate".

It's a crater left by geologists exploring the area in 1971. During drilling, a natural gas cavern collapsed, leaving a crater around 50-100 meters across. The fire was to burn off any potential poisonous gases, and it's been burning ever since.
Here's a couple of videos of it:
Very cool/freaky :)
(found at Boston.com)