The most intriguing of them is a circular enclosure roughly 33 metres across, now overgrown, defined by the low remnants of an earthen bank and an accompanying fosse. A fosse is a defensive or boundary ditch, and this one has a flat base nearly four and a half metres wide, cut into the uphill side of the monument on its north-east to south-west arc, where the slope would have made the enclosure most vulnerable to approach. A gap of just under four metres in the north-east of the bank marks the original entrance.

What makes the site quietly strange is its relationship to the landscape around it. Two raths sit within 150 metres to the north-west and 80 metres to the south-east respectively. A rath is a type of early medieval farmstead enclosed by one or more earthen banks, and they are common enough across Ireland, but to find two of them bracketing a third, differently classified enclosure, with further earthworks close by to the west and east, suggests that this small valley head was a place of sustained and deliberate settlement or activity over a long period. The enclosure at Finshoge is categorised separately from its neighbours, implying it served a different function, though what that function was remains unresolved. It sits towards the bottom of a west-facing slope, tucked towards the head of a south-to-north running valley, a position that would have offered some shelter while keeping it within reach of the broader cluster of monuments above and around it.