There are numerous turf walls in this area, including two strange small enclosures approx. 2 metres square, like the one illustrated in this photo. They are both perched on the edge of the cliff, about 30 metres apart, overlooking the geo.
Uploaded to Geograph by Tim Harrison on 24 July 2010
Photo © Tim Harrison, 24 July 2010. Licensed for reuse under this Creative Commons licence