Dun Troddan is a type of a fortress, an iron-age broch that was used as a defensive structure or as a symbol of power or perhaps as a residence in the Highlands region of Scotland.
Dun Troddan is one of the best-preserved brochs in Scotland and -like other similar buildings- is a landmark of historical significance.
In the footage we see openings-doors, chambers and stairs that give you access to the lower floor levels, while we understand that the building was extended to a great height. It is built out of stone.
Then we see a pier that ends up in the sea, boats moored nearby and the movie closes with a view of a sunset in between the mountains.