Pengate Mine

Located just east of the Ohio border, the abandoned Pengate Mine in rural West Virginia is as dangerous as any abandoned coal mine and so the locals steer clear of it and warn their children to keep away. This is good news because Pengate Mine is far more dangerous than any abandoned coal mines.
This is because there are an unknown number of elementals living in the abandoned tunnels of the Pengate Mine, twisted and mutated by the damage done to their home territory by mining and other industry. These elementals seem to not all be local to the area, but are instead attracted to the mine by some as yet undefined force.
There are stories, local folk legends, of flashes of flame, regions where smoke will flow from cracks in the earth or even from within the trunks of trees. During rainstorms the mines will flood and its said unnatural colors will run through the water. Officially, all of these are effects of the environmental damage and chemicals left in the Pengate Mine, but the supernatural community recognizes it instead as a place of confluence.
Efforts to repair and rehabilitate the area by both mortals and otherwise have met with failure time and again.