Two pictures ago..
That is the old smelter in Tahawus. Lots of interesting history there, if you walked down to the river behind the "chimney" you would have found enormous pistons and a crankshaft which were turned by a waterwheel to blow air into the smelter. One year we rode our mtn. bikes down to the old mine area and walked thru all the old buildings we could, like a ghost town. I heard the whole complex was demolished a few years ago.
You are never to old to learn something stupid.