Gannocks Castle is probably a 12th or 13th century fortified manorial site, encased by a wide moat. On three sides of the large rectangular platform is a strong inner bank, with a low outer bank on the eastern side. At the north-east angle, is a small circular mound, which may be the location of a defensive building or structure. Nearby over the moat, which still holds water along its northern arm, is a slight entrance causeway. A survey confirmed that an occupied medieval buildings, such as a farm or manor house once stood on the island. 9 miles west is Bedford Castle. Picture © Anthony Forth