It is not. What protrudes, intermittently, is roughly 240 metres of a constructed field boundary, about sixty centimetres wide and forty centimetres high where it shows above the peat, running in a general westerly direction across rough hill pasture. A second arm branches southward for approximately 120 metres, terminating at the riverbank. Together, the two stretches describe something that was once a deliberate organisation of land, a boundary that separated one use of ground from another, before the bog slowly swallowed most of the evidence.

The wall sits in a landscape that carries other traces of former occupation. Around forty metres to the south-east lies a hut site, a slight depression or scatter of stone marking the footprint of a structure that would once have sheltered someone working this hillside. The relationship between the wall and the hut is not formally established, but their proximity suggests they belong to the same episode of activity, a small farming presence on upland ground that was later abandoned to encroaching bog. Partially grass-covered rubble lying beside the wall is likely collapse from its upper courses, which gives some indication of its original height. The bog itself is a useful, if imprecise, archive: where peat has formed over a structure, it generally means the land fell out of active use, since sustained grazing or cultivation tends to prevent or slow peat formation. The wall at Annagh Beg was not demolished so much as it was quietly buried.