Battle of Culloden. The summit of Sgùrr na Ciste Duibhe is remarkable in having slipped down by 5–10 metres from the Glen Shiel Fault, which runs just behind it on the north-east. The fault trace cuts the east ridge at the awkward 'bad step' and crosses the north shoulder at the 'Red Top', these outcrops being linked by a fretted crest. Route-finding along the Five Sisters ridge can thus be difficult in mist and snow. The slippage has also created dangerous fissures up to 10 metres deep on the upper south face, including the eponymous 'black chest'. Part of the slippage collapsed, probably 10.000 years ago, leaving a long cavity scar, creating the knoll for the 1719 battle, and temporarily damming the river which has cut through it at the defile of the Pass of Glen Shiel Climbing The direct ascent of Sgùrr na Ciste Duibhe begins at a parking place at () on the A87 main road in Glen Shiel. It is a steep ascent up the hillside to the Bealach an Lapain where the eastern ridge of the mountain is then followed to the summit. This walk can be continued north west to take in the other peaks of the Five Sisters ridge, finishing eight kilometres from the starting point on the shores of Loch Duich. The summit is marked by a large cairn and gives extensive views. References The Munros, Donald Bennett et al.: Scottish Mountaineering Trust: The High Mountains of Britain and Ireland, Irvine Butterfield, Hamish’s Mountain Walk, Hamish Brown, 100 Best Routes on Scottish Mountains, Ralph Storer, The Story of Scotland's Hills, Campbell Steven, The Magic of the Munros, Irvine Butterfield, Footnotes Munros Marilyns of Scotland Mountains and hills of the Northwest Highlands One-thousanders of Scotland