Castle Ring is an Iron Age hill fort, situated high up on the southern edge of Cannock Chase, Staffordshire, in the village of Cannock Wood, West Midlands, England. Castle Ring was thought to have been occupied around AD 50, by the Celtic Cornovii tribe.
The Cornovii is the name by which two, or three, tribes were known in Roman Britain. The Cornovii of the Midlands area were based in the around modern Shropshire. Ptolemy’s 2nd century Geography names two of their towns: Deva Victrix (Chester), and Viroconium.