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MAP 3: BERNERAY CAUSEWAY TO HORNAISHinterland Geology and Coastal Geomorphology:This area of coastal units is dominated by Lewisian Gneiss. The ground immediatelysouth of the causeway to Bernerary is hilly and covered with shallow drift derivedfrom the parent rock. Here, peat is the dominant soil cover. From Newton (NF 88807840) the landscape changes dramatically, where a wide flat machair plain is presentfor well over a kilometre to landward. This ground has been subdivided into a seriesof regular field systems.Rock platforms outcrop at Port nan Long and round the small headland as far as LeacSudhanais. From here a low sandy beach extends as far as Hornais point where lowrock platforms extend north-westwards. The hinterland is dominated by a low dunesystem.Erosion Class:The first part of this section (Cell 9) has high exposed erosion faces betweenBernerary Causeway and Screvan at the back of the shingle beach, while south-westof Screvan has fresh, severe erosion scars. The area around Port nan Long is morestable but has some slow, wave impact erosion occurring. Traigh Lingeigh has seenwave action produce sheer dune faces with deflations present, but also erosion causedby human and animal tracks and animal burrowing.Built Heritage & Archaeology:There are relatively few recorded sites on this stretch of coastline, due to the presenceof machair and the low density of settlement. The majority of the recorded sites arebuildings, field boundaries, enclosures and lazy beds relating to the crofting landscapeof the 18 th -20 th centuries. Two cairns of early prehistoric date were recorded. A dunof later prehistoric date lies in the hinterland, on an islet within Loch an Sticir, and is aScheduled Ancient Monument.UISN/1051/034CFA