Dun Carloway. This dry-stone tower, or broch, was probably erected by native peoples at the time of the Roman occupation of Britain (43-400A.D.). It is an unusually well-preserved example, with the characteristic arrangement of guard chamber at the entrance and hollow wall construction. Brochs are peculiar to Scotland. Their origin and purpose are matters of controversy. This monument is in the care of the Secretary of State for Scotland. It is an offence to injure or deface it.