Wincobank is an Iron Age hill fort near Wincobank in Sheffield, England. The fort stands on an isolated sandstone hill that forms the northern side of the river valley of the River Don. The fort site is an oval-shaped earthwork that covers about 1 ha. A ditch, which was originally between 1.5 m and 2 m, surround the entire the fort. A counterscarp consistin…Wincobank is an Iron Age hill fort near Wincobank in Sheffield, England. The fort stands on an isolated sandstone hill that forms the northern side of the river valley of the River Don. The fort site is an oval-shaped earthwork that covers about 1 ha. A ditch, which was originally between 1.5 m and 2 m, surround the entire the fort. A counterscarp consisting of a rubble core was created from material excavated when digging the ditch. The outward side of the earthen rampart was reinforced with stone facings held together with timbers. These timbers show signs of being vitrified, the charring indicates they were subjected to intense heat. Maybe as a result of inter-tribal conflict in the late Iron Age. Material taken from a drainage ditch dug through the north east rampart of the fort in 1979 was radiocarbon dated to c. 500 BC.