Dùn Anlaimh is a small artificial island located in Loch Nan Cinneachan on Coll (grid reference ).. The loch lies directly north of Loch Anlaimh which also has an artificial island within it. Confusingly, Dùn Anlaimh sometimes appears as "Eilean nan Cinneachan" on maps (see OS map pictured left) and the island in Loch Anlaimh is known as "Eilean Anlaimh". According to the 20th century antiquary Erskine Beveridge, the two lochs probably were joined at one time, and that this would explain why Dùn Anlaimh is not located within Loch Anlaimh. Beveridge also thought the names of the lochs were suggestive. According to him, the Gaelic Loch nan Cinneachan and Eilean nan Cinneachan mean loch and island of the "" or "gentiles". During the early Middle Ages the pagan Vikings were sometimes styled as "Gentiles" within the Irish Annals. The Gaelic personal name Anlaimh can also be linked with the Norsemen as it is a Gaelicisation of the Norse personal name Anlaf..
