The remains of Carn Liath (the Grey Cairn) broch are still impressive with a well preserved entrance passage and lintelled doorway and walls that are still 12ft high in places. Carn Liath was first excavated in the 1800s by the Duke of Sutherland. As the name implies it was thought at the time to be some sort of burial mound or cairn. Opinions differ about the purpose of brochs, and range from resource-hungry status symbols to temporary defensive structures for extended families and their livestock. Around 500 were built in Scotland,
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