That destruction makes what was documented during the dig all the more significant, because the mound turned out to contain a quietly intricate arrangement of the dead, one that would now be impossible to study in the ground.

The mound sat on an esker, one of the long sinuous ridges of gravel and sand deposited by meltwater streams beneath retreating glaciers at the end of the last Ice Age. Eskers were frequently chosen as burial sites in prehistoric Ireland, their elevated, well-drained profiles making them visible landmarks in the landscape. At Carrowbeg, a low natural knoll was used as the foundation for an earthen mound roughly 16 metres in diameter and 2.2 metres high, encircled by a shallow fosse, the term for a ditch or trench cut around a monument. When G. F. Willmot excavated the site in 1937, he found at the centre a small hollow, only about 30 centimetres across, holding the cremated remains of an adult along with some animal bones. Around 60 centimetres to the south lay a short cist, a small box-like grave formed from stone slabs, oriented roughly west-north-west to east-south-east and measuring just 65 centimetres long by 30 centimetres wide. Inside were more cremated adult bones and a plano-convex knife, a type of flint tool with a flat underside and a domed upper surface, characteristic of the Early Bronze Age. The two deposits were separated by only a short distance, yet were clearly distinct, suggesting either two individuals commemorated in the same monument or a structured ritual logic that placed animal remains and human remains in deliberate relation to one another.

Because the site was subsequently destroyed by quarrying, there is nothing left to visit at Carrowbeg. What remains is only the excavation record, and the knowledge that somewhere beneath or beside a quarried hillside, a community once arranged their dead with considerable care on a glacial ridge in the Galway grassland.