Yep been up through there a couple times and put my mark on graffiti road.
They expect it to burn for another estimated 250 years. 3,700 acres and depts of up to 300 feet. But atleast it's burning Deep now. There are currently 38 coal fires burning in PA.
1 is just up the road from Centralia in Jeansville Pa. Just 27 miles to the north east. They are still working the mine but you can see all the steam and vapor venting.
This mine fire was caused naturally and was 1st discovered back in 2012 after several bore holes were drilled. They have no idea how big this fire is or it's location or how long it has been burning but it has serious potential to become another Town killer. Town folk have recently started complaining of strong sulfur odors in a few spots around town.
Pa has the largest deposits of Hard Anthracite coal in the world. 500 square miles of it to be exact. That's 3/4 of the worlds supply of Anthracite coal.