Though, it would probably be a bit spooky if it loomed unexpectedly out of a dark night. It actually is the root bole of a black locust. It fell over two decades ago; the wood is still very solid, sufficiently so that I would not recommend falling against any of those points. I have a fondness for black locust trees. They are massive, slightly gothic, often picturesque trees.* Some people dislike them, arguing that they aren’t native to New England. They are, however, native to Pennsylvania and points south; so the whole ‘not native’ complaint is somewhat tenuous given the similar climate and short distance between the Appalachians and the Berkshires. More to the point, it is a valuable timber, firewood, and nectar (for honey) tree.
*we have the third largest black locust in the state.