This slag-glazed stone shaped like a shoe was part of the furnace debris found in the bed of the Hoover Reservoir near Columbus, Ohio. After finding this and several other diagnostic artifacts, he author needed only to look to the top of the old creek bank to spot a hump on the level ground. The surface of the hump is covered with cinders and is almost certainly the top of a buried pit iron furnace. This glazed stone is 7 x 3.25 inches at its maximum length and width and is about 2.5 inches thick.