Wetland platforms of this kind were constructed directly over boggy or flooded terrain, typically to provide a stable working surface or a place to process materials at the water's edge. What makes this cluster unusual is its scale: nineteen identified in a single bog survey is a significant concentration, and the range of construction techniques suggests these were not all built at the same moment or for the same purpose.

A field survey published in 1999 recorded the structures in detail. Most were built from a combination of brushwood and roundwood, the basic vocabulary of prehistoric wetland carpentry, but the builders occasionally went further. Three platforms incorporated small anchoring pegs to hold the material in place, and two examples showed woven brushwood, a more deliberate interlacing technique that would have added both strength and surface stability. Radiocarbon dates were obtained from four of the platforms, placing one in the Late Bronze Age between 792 and 526 BC, and another in the Iron Age between 351 and 120 BC, a span of several centuries during which the bog was evidently a site of repeated human activity. Where wood species could be identified, nine sites yielded results: alder, ash, birch, hazel, and willow, all native species that would have grown around the bog margins and were well suited to wet conditions, particularly alder, which resists decay when kept permanently waterlogged.