Elsewhere on the moor are prehistoric stone settings and one of especial interest above Challacombe is known as a Quincunx. It consists of five stones, under a metre in height, set in the pattern of the five dots on a domino piece of that value, covering an area of about 6 metres by 7 metres.
This site has been damaged by vehicles on the site. It needs a detailed site drawing and photographs, some geophysics and also a small dig. Exmoor rangers could then re-instate stones which have been displaced.