It is D-shaped in plan, measuring roughly 2.5 metres across, and built from large granite boulders that reach no more than 0.75 metres in height. That modest scale is part of what makes it quietly arresting: this was a space just large enough for a person, or perhaps two, to occupy with some degree of shelter, with the bluff itself serving as a natural back wall.

Structures of this kind, sometimes called booley huts, were typically associated with seasonal practices such as transhumance, the movement of livestock to upland grazing during summer months, though without further excavation or dating it is difficult to assign this particular example to any one period or purpose. What is clear is that whoever built it made deliberate use of the terrain, tucking the flat side of the D against the natural escarpment to reduce the amount of walling required and to gain protection from the prevailing wind. The granite boulders used in its construction would have been gathered from the immediate surroundings, a landscape already shaped by glacial activity and centuries of peat formation. The site is recorded as being in fair condition, which in the language of field archaeology suggests it survives recognisably but has not escaped the slow attrition of weather, vegetation, and time.