This is not a monument marked on any Ordnance Survey historic map, nor one that draws visitors in any organised way. It sits in fen peat on the foreshore near Newtown in the barony of Pubblebrien, roughly 105 metres north of the embankment, and it would be easy to mistake its protruding timbers for driftwood or debris if you did not know what you were looking at.

The site was catalogued by the archaeologist Aidan O'Sullivan in 2001 as 'Carrigadirty Rock 1', and his description gives a clear sense of its scale and character. The structure is oval in plan, measuring 4.8 metres east to west and 4.6 metres north to south, and is defined by an inner ring of posts with what appears to be a further ring of smaller stakes outside, bringing the overall diameter to around 6 metres. At least 23 sharpened vertical roundwood posts and stakes, each between 4 and 12 centimetres in diameter, were driven into the peaty ground. Roundwood refers simply to timber used in its natural, unsawn form, and the sharpening of the posts suggests they were hammered or pressed down into the soft substrate deliberately. A few stone slabs were recorded to the north-east of the structure, and a single calf mandible, the lower jawbone, was found at its southern side. A radiocarbon date taken from one of the vertical posts returned a result of 3330 plus or minus 25 BP, calibrated to between 1681 and 1529 BC, placing the structure firmly in the earlier Bronze Age. The fieldwork was carried out in July 1994. Approximately 48 metres to the west, a separate post row has also been recorded.

Accessing the site requires awareness of tidal conditions, as the structure lies within the intertidal zone and will be submerged for much of any given day. The peat in which the posts are set is described as reedy and woody, which gives some sense of the waterlogged, unstable character of the ground underfoot. The area is not managed as a heritage site, and there are no markers or interpretive panels. What a careful observer might see at low water are the dark, weathered tips of ancient timber posts emerging from the estuary mud, the bones of a small oval building that has not been dry land for several thousand years.