The Stanwick Iron Age Fortifications, a huge Iron Age hill fort, sometimes but not always considered an oppidum, comprising over 9 kilometres (5.6 mi) of ditches and ramparts enclosing approximately 300 hectares of land, are situated in Richmondshire, North Yorkshire, England. Whether Stanwick was the stronghold of Venutius or Cartimandua, or perhaps of them both for a brief time before their acrimonious split some time after 51 AD, it is certain that this settlement was one of the most important in Brigantia, the Brigantes kingdom during the early stages of the Roman occupation of Britain. The site is a scheduled monument.