 There is a linear outer work about 120 m away, parallel to the westerly rampart, enclosing another 1.8 ha.There was a tunnel, which has now been filed in, which gave the camp safe access to a nearby spring for water.It was common for ancient hill forts to be reused as pens for domesticated animals in the Medieval period, and there is documentary evidence that Ruborough became a "porcheria", or piggery, owned by the Saxon domain of Somerton.