Dun

Dun is a generic term for an ancient or medieval fort. It is mainly used in the British Isles to describe a kind of hillfort and also a kind of Atlantic roundhouse. The term comes from Irish dún or Scottish Gaelic dùn (meaning "fort"), and is cognate with Old Welsh din (whence Welsh dinas "city") comes. Duns are similar to brochs, but are smaller and probably would not have been capable of supporting a very tall structure. Good examples of this kind of dun can be found in the Outer Hebrides of Scotland, on artificial islands in small lakes.

Dun

Dun is a generic term for an ancient or medieval fort. It is mainly used in the British Isles to describe a kind of hillfort and also a kind of Atlantic roundhouse. The term comes from Irish dún or Scottish Gaelic dùn (meaning "fort"), and is cognate with Old Welsh din (whence Welsh dinas "city") comes. Duns are similar to brochs, but are smaller and probably would not have been capable of supporting a very tall structure. Good examples of this kind of dun can be found in the Outer Hebrides of Scotland, on artificial islands in small lakes.