A thin layer of peat, which is in turn buried by a substantial thickness of laminated sandy silts. The eastern peat exposures relate to the disrupted bedding within the overlying estuarine silts, where a palaeochannel or embayment cuts the underlying peat. Five tree stumps and six trunks have been mapped. Flint artefacts and charcoal have been found. The carbon 14 dates for the peat suggest 6790 +/- 38BP. The dendro dates for the tree stumps suggest 6195-5938 +/-16.

Sources include:
Glamorgan Gwent Archaeological Trust HER Ref: 08116g
Maritn, B, 2000, Mesolithic activity at about the time of the lower submerged Forest in Bell, M, Caseldine, A E and Neumann, H (eds), 2000, Prehistoric Intertidal Archaeology in the Welsh Severn Estuary, CBA Research Report 120, York, pg36-47
Smith, A G and Morgan, L A 1989, A succession to ombrotrophcic bog in the Gwent levels and its demise: a Welsh parallel to the peats of the Somerset levels

Maritime Officer, RCAHMW, May 2012.