Two hikers were left terrified after stumbling across a mysterious fire that was only burning INSIDE a tree.

Footgage of the tree burning from within with no smoke has gone viral after the pair posted it to YouTube and it was picked up by conspiracy websites, prompting claims that Satan is real.   

The clip was filmed by two passers by in woods in Ohio, USA, on December 21.

It shows flames raging inside a tree, from top to bottom, with no sign of any fire damage on the outside.

To read more and view the video, click here.