The earthworks consist of a relatively simple oval bank of timber and earth fronted by a ditch, with opposing causewayed entrances on the east and west sides.

[7]During the Second World War, the hilltop surrounding Liddington Castle was used as a Starfish site (a bombing decoy designed to appear as a burning town or city).

[8][9][10][a] Evidence of this use remains in the form of the surviving command bunker, located 1 kilometre (0.62 mi) north-east of the fort, and a metal trough used to simulate explosions and fire.

[11] Liddington Castle was a favourite haunt of local writer of natural history and rural life, Richard Jefferies, who spent much of his spare time walking through the wide chalk expanses of the Marlborough Downs.

It was on this summit that he relates in The Story of My Heart that his unusual sensitivity to nature began to induce in him a powerful inner awakening – a desire for a larger existence or reality.