The monument consists of a row of six megalithic chambers stretching across 100 metres, split between two fields just south of a narrow road. Dating from the Neolithic period, these chambers are numbered 1 to 6 from west to east, with most identified as portal tombs; distinctive burial monuments characterised by their large capstones and entrance portals. Each chamber faces a different direction: Chamber 1 faces east-northeast, Chamber 2 faces south-southeast, Chamber 3 faces north, and Chamber 6 faces east, whilst the orientations of the heavily ruined Chambers 4 and 5 remain uncertain.

Chamber 5, the focus of this particular monument record, presents a puzzle to archaeologists due to its severely deteriorated state. The structure’s northern end has been incorporated into the roadside wall, with a large displaced roofstone measuring 3.1 metres by 2.2 metres now resting against an upright stone. Two parallel orthostats, both leaning slightly northward, suggest this may have been a portal tomb similar to its neighbours, though its original form remains unclear. The southern orthostat appears to have been broken, standing just one metre high, whilst various loose stones and a small grass-covered heap nearby hint at the structure’s former grandeur.

Historical accounts provide fascinating glimpses into the site’s past. Thomas Fagan, visiting in 1847, recorded seven chambers rather than the six visible today and claimed they once stood within a single long cairn measuring approximately 91 metres east-west and 18 metres north-south, though by his time it was already partly destroyed by tillage and fencing. The Board of Works undertook restoration work in the late 19th century, though the exact nature of their interventions remains contentious, with antiquarian William Borlase later accusing them of making major alterations to the larger chambers. Today, apart from a small stony mound near Chamber 6, only scattered stones across the eastern half of the site suggest the presence of the ancient cairn Fagan described, leaving much of this monument’s original appearance to the imagination.