I had pieces of land in Mass. about 45 years ago that I had surveyed. They had trouble finding one of the corners until they noticed a little piece of wire coming out of the bark of the tree right where the corner should have been. Digging around in the bark they found more barbed wire. They then found barbed wire beneath the soil going in the direction of where the side boundaries were. Since the tree wasn't that big in diameter they believed it was a fence post that had budded. Does any dendrologist out there know if that's possible.