Structural detail of Witt Shields Barn, Cades Cove, TennesseeGreat Smoky Mountains National ParkDetail of A (see photo at III-B-10629)... View from the exterior, showing the keepers which held the sliding bot to lock the door; the end of the log feed trough; and the hay rack. The spikes used to nail the door jambs to the wall logs are made from old horseshoes.