That deliberate gap in the planting is itself a kind of marker, drawing attention to something the foresters recognised as worth leaving alone.

The cairn, a low platform of heaped stone rather than a freestanding monument, lies within the broader Spinans Hill hillfort complex. A hillfort is typically a large enclosure defined by earthen banks or stone walls, built on high ground during the Iron Age or earlier, and Spinans Hill carries the remains of just such a structure. The cairn sits approximately fifty metres to the south-west of a circular enclosure that forms part of the same complex, suggesting the two features were once part of a related landscape of activity, though the precise relationship between them remains unclear. The site was noted by Condit in 1992.