1. The Eternal Flame Falls is a small waterfall in the Shale Creek Preserve, a section of the Chestnut Ridge Park in New York.
3. Scientists have been thinking that the eternal flame was kept alight by gas produced by ancient, extremely hot rocks.
4. There are hundreds of 'natural' eternal flames around the world, and each one is thought to be kept alight by natural gas produced from the rocks beneath it.
