These are in turn surrounded by a double ditch on the land portions, and also include over 100 towers in various locations.

She recognized the view from the hotel room window-the famous double ditch of Senior Course A, and the hedge beyond.

Nor is the ground outside the camp's double ditch and wall mined with hazards.

The fort had an earthen rampart and double ditch.

By 1272 a moat had been built and a boundary wall and double ditch were noted in 1282.

A fenced mound and a double ditch would soon have been created by the Danes.

The camp was very modern, filled with supplies and well defended, with walls of mud brick and wood, towers and a double ditch.

The hill offers excellent defensive slopes on all sides, which have been supplemented by the double ditch and rampart earthworks.

The complex was surrounded by a wooden palisade with a double ditch and three gates to the west, east and south.

The site is surrounded on three sides by a double ditch.