Found "Treasure"

This is a photo of the old limestone well we found, while floundering through the timber on the river bottom. We were so excited! I want to get down in it, of course, to see if there are any artifacts but Himself is saying that we cannot for fear of collapse. I do think we can find some kind of a grappling hook or long handled tool, so that we can at least probe for treasure . . . the other side