An Dun

Rising as a striking, steep-sided fortress between the deep troughs of Loch an Duin and Loch Bhrodainn, this Corbett dominates the remote Gaick Forest. Its distinctive flat-topped profile resembles a massive man-made earthwork. Reaching the summit requires a long, atmospheric approach through the desolate glens south of Dalwhinnie.

• •The name is Gaelic for 'The Fort', a nod to the hill’s remarkably symmetrical, steep-sided appearance that mimics a prehistoric defensive earthwork when viewed from the floor of the Gaick Pass.
• •The hill sits in one of the most remote parts of the Grampians, famously associated with the 'Gaick Catastrophe' of 1800, where an avalanche destroyed a nearby hunting lodge.
• •From the summit plateau, there are exceptional views looking straight down the glacial trench of the Gaick Pass toward the Minigaig, with the sprawling plateaus of the Atholl Forest visible to the south.
• •The surrounding crags and high-altitude scree provide a habitat for dotterel and mountain hares, while golden eagles are frequently sighted hunting along the ridges of the neighbouring Gaick hills.
• •Despite the name suggesting an ancient stronghold, the only things currently defending the summit are a few weather-beaten hares and whatever wind has been funnelled up through the pass.