​Rusted metal, large 5 ft long, seemingly hollow object in the shape of a tapered cylinder, letters “DAME-“ visible on front. found off a path in SE PA

Found right on the side of path roughly 10 yards from the Schuylkill River in SE PA. It seems rusted through and from the holes in the side I infer it is at least partially hollow. It’s plainly visible and seems like it has been there for years.