In the Middle Iron Age a local tribe established a fortified enclosure on the Fen edge between the Welland and the Nene. With an internal area of 3.8 hectares it was a significant feature of the local landscape.
Today the fort can be clearly seen in aerial photographs. The site is bisected by Decoy Road; to the west the site is on protected land, under pasture. To the east it has been more affected by plough damage.
