"Huge metal cylinder found in the middle of the woods (Central Pennsylvania)"
A: "It’s an “upright” tank for fluid storage. Normally 12’ diameter and 20’ tall, they hold 400 barrels of fluid. This one is laid on its side, which is how most are transported."
I like the Skull on a chain.
no it not, that dish would hold entirely too much wax for a seal, it it more than likely an aromatic oil burner.
https://www.amazon.com/Skillet-Warmer-Burner-Country-Primitive/dp/B00JL2O2TI
something similar to that.
It's a melting pot for lead, shaped for easier
pouring into molds.