These ancient tombs, dating back thousands of years, form part of National Monument no. 139 and represent one of the most intriguing portal tomb complexes in County Donegal. The site offers sweeping views westward out to sea and eastward along the valley floor, though the lower slopes of Leahan Mountain rise steeply to the south, creating a natural amphitheatre around these prehistoric monuments.

The six chambers, numbered from west to east, stand at irregular intervals in two adjacent fields just south of a narrow road. Four of them are definitively portal tombs, each facing a different direction; chamber 1 faces east-northeast, chamber 2 faces south-southeast, chamber 3 faces north, and chamber 6 faces east. Chamber 5, though heavily ruined, appears to have been another portal tomb, whilst the original design of chamber 4 remains uncertain. When Thomas Fagan visited in 1847, he reported seven chambers and claimed they had once stood within a single long cairn measuring approximately 91 metres east to west and 18 metres north to south, though by his time it was already partly destroyed by farming and fence building.

Chamber 3, the north-facing portal tomb, exemplifies the construction techniques of these ancient builders. Its eastern portal stone still stands at 1.4 metres high, marking the entrance, whilst its western counterpart has fallen and now lies beneath a displaced roofstone. The chamber itself would have measured less than 2.5 metres in length, narrowing slightly from front to back, with single stones forming the sides and a backstone completing the structure. The massive roofstone, measuring 2.5 metres by 1.4 metres and up to 0.7 metres thick, now rests at an angle across the front of the chamber. Historical accounts reveal the gradual deterioration of this particular tomb; Fagan's 1847 sketch shows both portal stones upright with the roofstone resting on them, but by the time Norman Moore visited in 1871, the structure had already begun to collapse into its current state.