Finding this site was relatively easily as we were holidaying in Bruernish.
Just before the small village of Northbay, on Barra’s east side, there is a signpost indicating Bruernish. Take this and head east until a cattle grid at Boggach. Park here and jump the fence heading north, the east of the very small sea loch. I walked up the west side of fence, not much room but enough. In front, a headland will be seen, and 70m north of that is the dun.
The 70m is an easy guess as the causeway is that length, on my visit submerged. However, the dun can be easily viewed and some some stonework remains in place. Elsewhere vegetation is taking over or walls have fallen.
Lovely views, and the sea was calm.
Visited 14/07/2022