They are not. These are paired archaeological mounds, deliberately constructed, and their proximity to one another gives them a quality that single monuments rarely have: a suggestion of relationship, of purpose shared between two forms.

The larger of the two is subcircular in shape, measuring roughly 12.6 metres north-northeast to south-southwest and 7.4 metres across, rising to about a metre in height. It is composed of earth and stone beneath its grass covering, and field walls have cut into it at the north-northeast and southeast, the kind of quiet agricultural damage that accumulates over centuries without anyone particularly intending harm. The smaller companion mound, adjoining it on the north, measures around 5 metres by 3 metres and stands at roughly 0.7 metres high. Tim Robinson noted both in 1980, and they sit approximately 375 metres east-southeast of Dún Beag, a nearby monument that gives some sense of the broader archaeological density of this part of Connemara. What these mounds were built for, and when, remains unrecorded; they carry no surviving explanation, only their form.