Nineteen such structures were identified during field survey of the bog, making this one of the more concentrated clusters of wetland archaeology in the county. That so many survive in any recognisable form is largely down to the bog itself, whose anaerobic, acidic conditions inhibit the decay that would destroy organic material on dry land.

The platforms were built from a combination of brushwood and roundwood, the kind of material that would have been readily available from the woodland edges surrounding the bog. At several sites, small anchoring pegs were driven in to hold the structure in place, and two examples show woven brushwood, suggesting a degree of craft and intention beyond simply throwing branches onto soft ground. Radiocarbon dating has placed four of the platforms within a span running from the Late Bronze Age, roughly 792 to 526 BC, through to the Iron Age, as late as 120 BC, indicating that people were returning to and reworking this landscape across many generations. Wood species identified at nine of the sites included alder, ash, birch, hazel, and willow, all native trees well suited to wet ground and each with different structural properties, which implies some degree of selection rather than casual gathering. The survey work was carried out by Gowen in 1999, and the findings were subsequently incorporated into the archaeological inventory of the county compiled by Jean Farrelly and Caimin O'Brien.