Loch Buie has always been a strategic area going back to Iron Age times. The land looks out to the South West and is fertile and defendable. The fort shown in the image lies at the far South-east end of the bay, past the Mausoleum. Only stones remain, but it is easy to see its original shape. Beyond this point the land becomes more elevated and is an excellent place to observe both White-tailed and Golden Eagles.
Duns were usually situated on islands, on the summits of small hills, or at the ends of coastal or inland promontories. Wall thickness varied from 2.3 to 4 metres.
Dunan Mor is situated 160 metres South-west of the Mausoleum and occupies the summit of a rocky outcrop, which rises some 20 metres above the shore of Loch Buie, but only 2.6 metres above the adjacent ground.
The dun can be accessed with relative ease from all sides except the North-west, where there are cliffs 3 metres high at the top of the seaward slope. Roughly sub-rectangular on plan, it measures 17 metres from NE to SW by 14 metres transversely within the ruins of a stonewall which has been reduced for much of its circuit to a low spread of stony debris.