A rath, as these earthwork enclosures are commonly known, was typically a circular area bounded by one or more banks of earth and an outer ditch, used as a farmstead or enclosed dwelling during the early medieval period. The example at Lugatober sits on a gentle north-west-facing slope in open pasture, and while the circular form is still just about legible, the site has been worked over enough that reading it requires some patience.

The enclosure is modest in scale, measuring fifteen metres in diameter, with an earthen bank some six and a half metres wide and only around forty centimetres high internally. That low profile already suggests considerable weathering or disturbance over the centuries. What would typically accompany such a bank, namely a fosse or external ditch, is not visible at ground level here at all. The bank survives in the western to southern arc, but from the south-south-west it has been removed entirely by a small quarry, and from the south-west to west the edge of the site is indicated only by an irregular scarp rather than any defined earthwork. No original entrance can be identified. Adding to the complexity, a field boundary bank running roughly east-north-east to west-south-west cuts across the interior north of centre, breaking through the ringfort bank at both the west and north-east. The southern portion of the interior has been heavily disturbed by the same quarrying that removed part of the bank, leaving that section largely unreadable. The result is a site that has been sliced, drained, and divided by later agricultural activity, with the early medieval enclosure surviving only in fragments beneath it all.