 Norse and Viking colonisations and settlements have made an impression on peripheral Scotland, the evidence for which can be found in place names, language, genetics and other aspects of cultural heritage.The Scandinavian influence in Scotland was probably at its height in the mid 11th century during the time of Thorfinn Sigurdsson, who attempted to create a single political and ecclesiastical domain stretching from Shetland to Man.The "Suðreyjar" have a total land area of approximately .