The structure is modest almost to the point of invisibility: a low, undulating grassy bank, no more than 0.4 metres high and 0.8 metres wide, tracing a rough circle about 3.6 metres across. A gap on the eastern, downslope side most likely marks where a door once stood. Inside, the ground is level, broken only by two or three stones pushing through the surface.

The huts at Bunnamohaun were almost certainly built for booleying, the old Irish practice of moving livestock, usually cattle, to upland summer pastures and living alongside them for the season. Booley huts, the temporary shelters used during these summer migrations, are found across Ireland wherever common grazing land climbs toward open hill. This particular group of six is scattered across roughly 60 metres of steep ground on either side of a small stream, the huts placed at different elevations as though each household or each season claimed its own level of the hill. The one at Bunnamohaun is the highest of the six, sitting 14 metres south-west of the stream, with its nearest neighbour around 22 metres downslope to the east-south-east. The cluster survives in good condition, which is itself unusual; booley huts were built for temporary use and many have dissolved back into the hillside over time.

The site sits on commonage on Clare Island, off the Mayo coast, and reaching it involves the climb up Knockmore's southern flanks. The exposed position is part of what makes these structures legible in the landscape; without tree cover or later building to obscure them, the low banks read clearly once you know what you are looking at. The entrance gap, facing downslope to the east, is worth noting as a practical detail that connects the structure to its original purpose, oriented toward the lower pastures the herdsmen and their animals would have worked each day.