What makes it worth pausing over is the care evident in its construction: drystone walling, the technique of stacking uncut or minimally shaped stone without mortar, here built to a thickness of over half a metre from rough slabs, solid enough to have held its form through however many seasons have passed since anyone last sheltered inside.

The structure measures 3.8 metres east to west and 2.7 metres north to south, which gives a sense of how compact it was. The entrance, just 0.7 metres wide, sits off-centre towards the west in the south wall. That slight asymmetry is a practical detail rather than an accident: the interior floor has been raised slightly along the southern portion to level it against the natural fall of the hillside. Whoever built this understood the slope and worked with it. The interior is now covered in ferns, and a few trees have established themselves outside the south wall, softening what was once, presumably, a more exposed and functional space. Whether it served a seasonal agricultural purpose, as shelter for a person tending livestock on the upland commonage, or something else entirely, the structure itself does not say.