While exploring Parkdale recently, the kids a I discovered these black rods at various places around the ruins. It's difficult to determine their age as I don't know how they would stand up against weather and time. After a little research, I found that they are highly conducive to electricity and MAY be electrodes from an old carbon-arc lamp. It was suggested that they may be some sort of fuse or fuseable link to a railroad signaling device. The one with the metal cap, though, looks like it may be from a dry-cell battery.(???) Does any one have a info on what they are? Also, it takes a decent amount of power to light a carbon arc lamp. Does any one know for sure if there was electricity at Parkdale? I've never found any signs of it.