You would not see it at first glance, or even at second. The clue is a slightly denser, slightly taller patch of heather growth, roughly five and a half to six metres across, sitting in the south-west corner of an old rectangular turf cutting. Press down through the vegetation at the edge of that circle and you may feel, or briefly glimpse, the stones of what appears to be a low wall, barely clearing the bog surface and only two stones wide at most. A shallow arc of these close-set stones is exposed along the south-east to south-west arc of the perimeter, the rest remaining concealed. What lies beneath is likely a circular stone structure, possibly a hut site, preserved by the very peat that makes it so difficult to see.

Blanket bog is a remarkable, if accidental, archivist. Its acidic, waterlogged conditions can slow decay to almost nothing, locking away timber, leather, and stone for centuries or millennia. The structure at Crowagh sits beside the Crowagh River valley, which borders the plateau to the north-east and east, and the turf cutting that frames it suggests the land has been worked at some point, though how much of the surrounding peat may have been removed over time is unclear. What remains is a stone bank or wall roughly 0.4 to 0.7 metres wide. The term hut site, as used in Irish archaeology, generally refers to the remains of a simple circular or oval dwelling, often associated with seasonal or agricultural use of upland landscapes, though without excavation it is impossible to assign a date or purpose to this particular example with any confidence.

The site is not signposted or formally accessed, and the terrain, wet bog and dense heather, makes any visit a matter of careful footing. The heather cropmark, that telltale ring of slightly more vigorous growth, is the primary visual indicator of what lies beneath, and it would be easiest to read in late summer when heather is in full growth. The stones themselves are more felt than seen, probing gently through the surface rather than disturbing the vegetation. There is something quietly affecting about that, finding the outline of a vanished structure not with your eyes but with your hands.