Dun Beag is one of the best preserved brochs and a good example of a broch tower. 

Brochs only appear in Scotland. They are dry stone structures formed of two concentric walls with a narrow entrance passage. Stone stairs ran between the walls to provide access, perhaps to upper floors, and the top.

Scotland’s brochs were built in the Iron Age, first emerging about 2,300 years ago. Their use continued until the middle of the first millennium CE.

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