Cheviot roundhouse settlements were sometimes built in an enclosure bounded by a timber wall that shows up as a ditch or groove. A single wall would have protected the inhabitants from marauding animals, but a double palisade would have had more military value, perhaps allowing for structures like raised walkways for defence. There are examples of two such palisaded enclosures on High Knowes near the Salter’s Road.
In some cases the remains of the houses in the enclosure overlap with one another, suggesting phases of building and that the settlement was in use for some time.
These enclosures are generally thought to date from the late Bronze or the early Iron Age, and to be the precursors of the hillforts or camps.