Up to fifteen parallel pieces, each between 20 and 25 centimetres thick, were oriented roughly north-northeast to south-southwest, angling into the exposed drain cutting at an oblique angle. The arrangement was too deliberate to be accidental.

The central cluster, recorded by Jane Whitaker of Archaeological Development Services and published by Dunne in 1999, consisted of eight pieces of brushwood around five to six centimetres in diameter, accompanied by what may have been a split piece of roundwood, the term used for a branch or stem worked or shaped along its length. Surrounding this core group were outlying bundles, each made up of three smaller pieces with intact twigs still attached, positioned at measured intervals to the north-northeast. A single further piece lay to the south-southwest. The overall pattern pointed towards a peatland platform, a structure built from laid timber to provide a stable working or crossing surface over wet, unstable bog. Such platforms are known from Irish bogs across many periods, though the precise date of this one at Derrindiff was not established from the available evidence. The bog itself would have acted as a near-perfect preservative, sealing the organic material from the oxygen that would otherwise have broken it down over centuries.

What survives here is modest in scale but precise in its arrangement, a few armfuls of cut wood that somehow encode the practical logic of people managing a landscape that most would simply have avoided.