Brady and I were out exploring in Pandemonium today. I don’t know very much about the place, but poking about on the internet provided a nice summary of various information on the topic available online. Most of it is copied directly from here, which is an interesting message board on it’s own for those of us familiar with Cumberland County. He seems to have missed the bit about the place purportedly being haunted, but the site doesn’t really give any specific information on that anyhow, so that’s understandable.
I have pictures of the remains of the tannery and various other stuff from the area: if anyone’s interested, I can post them later.