It is easy to overlook, the kind of thing a walker might step around without registering what it is: the remnant of a small circular hut, its walls reduced to a ring of tumbled stone that still protrudes a few centimetres above the surrounding peat.

Drystone construction, in which stones are stacked without mortar, was the dominant building method in this part of Ireland for thousands of years, used for everything from field boundaries to domestic shelters. The wall here, once roughly sixty centimetres thick, now stands only about forty centimetres proud of the bog surface, with loose stones scattered both inside the interior and down the slope on the outer face. What the bog has done, slowly and without ceremony, is to preserve the outline while swallowing much of the structure. An enclosure of a different kind lies just six metres to the north, suggesting this small hut did not stand in isolation but formed part of a wider pattern of activity on this hillside, though the relationship between the two features and the period in which they were in use is not recorded.