They sit in rough pasture on the southern slopes of the Partry Mountains, orientated northeast to southwest, and together measure just four metres end to end. What makes the arrangement quietly odd is the deliberate contrast between them: the two outer stones are rounded granite boulders, compact and roughly lozenge-shaped, while the central stone is a larger gneiss boulder, seamed with natural cracks, standing 1.3 metres high with a flattish top that slopes slightly northward. The long axis of each individual stone echoes the alignment of the row as a whole, a detail that suggests intention rather than accident. To the southwest, the ridgeline of Maumtrasna Mountain fills the horizon.

Stone rows of this kind are a prehistoric monument type found across Ireland and Atlantic Europe, though their precise purpose remains genuinely uncertain. Astronomical alignment, territorial marking, and funerary association have all been proposed, and none fully accounts for the variation found across different sites. The Lettereeneen row sits within a small but telling cluster of prehistoric remains. Just two metres to the east lies a ringbarrow, a low circular earthwork typically associated with burial. Three hundred metres to the west-southwest, a second stone row and a cairn occupy the same general landscape. Whether these monuments were raised at the same time or accumulated across generations is not known, but their proximity suggests this particular slope above Lough Mask held some sustained significance for the people who shaped it. The scatter of small stones around the base of the row appears to be a more recent accumulation rather than anything original to the monument.