Dun Telve

"Brochs are unique to Scotland. In pretty Gleann Beag (‘the little glen’), just south of Glenelg village, Dun Telve is a 2,000-year-old Iron Age structure (the word dun means ‘fort’).
This broch is over 20m in diameter and the portion that still stands is about 10m high. Behind the narrow, west-facing entrance doorway, a 5m-long passage leads into the interior.

Along the passage is a small side-chamber, sometimes called a ‘guard cell’. The door (now missing) within the passage was well secured by a bar hole in the wall, just as in a medieval castle.

The section left standing gives a perfect cross-section to show how brochs were constructed. The two concentric drystone walls are tied together by large horizontal slabs. These slabs also form the floors of the narrow galleries between.

Access up the tower is by a winding stone stair, and openings at intervals once gave access to the upper floors. The presence of two horizontal stone ledges, or scarcements, up the height of the surviving section suggests that there were two upper floors. The top floor would have been around 9m above ground level."
From Historic Scotland