Scotland in the Early Middle Ages to be adopted for house building, often combining layers of stone with turf. Place-name evidence, particularly the use of the prefix "pit", meaning land or a field, suggests that the heaviest areas of Pictish settlement were in modern Fife, Perthshire, Angus, Aberdeen and around the Moray Firth, although later Gaelic migration may have erased some Pictish names from the record. Early Gaelic settlement appears to have been in the regions of the western mainland of Scotland between Cowal and Ardnamurchan, and the adjacent islands, later extending up the West coast in the 8th century. There is place name and archaeological
Firth of Clyde m wide and is operated by Northwestern Shiprepairers Limited using the name Scott Lithgow, although unrelated to the famous Port Glasgow Scott Lithgow shipbuilding company. The Firth of Clyde has one of the deepest sea entrance channels in northern Europe, which can accommodate the largest Capesize vessels afloat, and as such the Clyde is one of the UK's leading ports, handling some 7.5 million tonnes of cargo each year. Hunterston Terminal was constructed to bring in bulk ore, but now mainly deals with coal imports. Supertankers up to 324,000 tonnes travel up the firth to deliver crude oil to Finnart