[1] King John's Hill is a small multivallate hillfort, a fort with multiple defensive rings, and has been dated on ceramic evidence to approximately 100 BC.
Limited archaeological excavation revealed plentiful evidence of the hill's Iron Age occupation, later medieval remains, and post-medieval activity.
[2] The quarrying has destroyed the fort's defences on the north side of the hill, but they are elsewhere evidenced by two concentric scarps separated by a wide shelf.
Further remains date from the Tudor period, and include short lengths of wall, packed floors, bricks, tiles, and ovens.
[4] The traditional association of the hill as a site of a medieval hunting lodge attributed to King John is supported by documentary evidence that a deer park existed at East Worldham at least as far back as 1372.