National Geographic and LiveScience have the story of a complete 300-million-year-old rain forest found fossilized intact, thanks to an ancient earthquake, in an Illinois coal mine.

Miners in Illinois are used to seeing a few plant fossils strewn along a mine’s ceiling, but as they burrowed farther into this one, the sheer density and area covered by such fossils struck them as phenomenal, Elrick said.

That’s when they called paleobotanist Howard Falcon-Lang from the University of Bristol in the United Kingdom and William DiMichele, a curator of fossil plants at the Smithsonian National Museum of Natural History.

“It was an amazing experience. We drove down the mine in an armored vehicle, until we were a hundred meters below the surface,” Falcon-Lang said. “The fossil forest was rooted on top of the coal seam, so where the coal had been mined away the fossilized forest was visible in the ceiling of the mine.”

Photo by Howard Falcon-Lang
(via BoingBoing)