Scandinavian Scotland Oronsay have produced important pagan Norse burial grounds. An 11th-century cross slab decorated with Irish and Ringerike Viking art on Islay was found in 1838. Rubha an Dùnain, today an uninhabited peninsula to the south of the Cuillin hills on Skye, contains the small Loch na h-Airde, which is connected to the sea by a short artificial canal. This loch was an important site for maritime activity for many centuries, spanning the Viking and later periods of Scottish clan rule. There is a stone-built quay and a system to maintain constant water levels. Boat timbers discovered there have been dated
Skye at Waterstein Head. Oolitic loam provides good arable land in the main valley. Lochs Bracadale and Harport and the island of Wiay lie between Duirinish and Minginish, which includes the narrower defiles of Talisker and Glen Brittle and whose beaches are formed from black basaltic sands. Strathaird is a relatively small peninsula close to the Cuillin hills with only a few crofting communities, the island of Soay lies offshore. The bedrock of Sleat in the south is Torridonian sandstone, which produces poor soils and boggy ground, although its lower elevations and relatively sheltered eastern shores enable a lush growth of