Boulder burials are a monument type found almost exclusively in the south of Ireland, consisting of a large capstone raised above a cluster of smaller support stones, and typically associated with the Bronze Age. What makes the site at Knocks unusual is not a single example but three of them, positioned roughly 1.5 metres apart from one another, forming a loose triangular grouping in the middle of ordinary farmland.

Each of the three monuments has its own character. The north-eastern boulder, measuring 1.8 metres by 1.7 metres and sitting about 0.9 metres above the ground, is held up by four support stones. The south-western example is the largest of the group, a subcircular slab some 2.4 metres in diameter resting on at least five supports. The north-western monument is slightly more modest in its cover stone, at 2 metres by 1.3 metres, with two support stones clearly visible beneath it. Whoever placed these here did so with an evident sense of arrangement, orienting the three around a shared centre point. Just 8 metres to the east sits a ringfort, the type of enclosed circular settlement that was common across Ireland from the early medieval period onwards, which suggests this small patch of ground continued to hold significance across very different eras.