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Bidean nam Bian
Bidean nam Bian from Stob Coire Sgreamhach 11-06-19.jpg
Bidean nam Bian seen from Stob Coire Sgreamhach
Highest point
Elevation 1,150 m (3,770 ft)
Prominence 845 m (2,772 ft) Ranked 22nd in British Isles
Parent peak Ben Nevis
Listing Munro, Marilyn, County top (Argyll)
English translation Fence of the hides or Peak of the Mountains
Language of name Gaelic
English approximation: bit-YAN-nəm-BEE-ahn
Location Glen Coe, Scotland
Parent range Grampian Mountains
OS grid NN143542
Topo map OS Landranger 41

Bidean nam Bian, lying to the south of Glen Coe, Highland, Scotland, is the highest point in the former county of Argyll. It is a complex mountain, with many ridges and subsidiary peaks, one of which, Stob Coire Sgreamhach, is classified as a separate Munro.

The most noticeable features of Bidean nam Bian are the famous Three Sisters of Glen Coe, three steeply-sided ridges that extend north into the Glen. Two of the sisters, Gearr Aonach (Short Ridge) and Aonach Dubh (Black Ridge) converge at Stob Coire nan Lochan, a 1,115 m (3,658 feet) subsidiary peak of Bidean nam Bian that lies about 1 km to the northeast of the actual summit. The final, most easterly sister, Beinn Fhada (Long Hill), joins the Bidean nam Bian massif at the summit of Stob Coire Sgreamhach.

Beinn Fhada is separated from Gearr Aonach by a glen known as Coire Gabhail. This can translate to Glen of Capture, however the glen is more normally known as the Hidden or Lost Valley, as it has a wide flat area concealed from Glen Coe by the landslip which blocked the entrance and allowed a loch to form. The valley was used by Clan Macdonald to hide their livestock from raiders, or hide cattle they themselves had stolen. The steep rough path up from Glen Coe skirts a wooded ravine, and is a popular short walk (around 4 kilometres (2.5 mi) in total), though it involves a river crossing and some rocky sections.

Listed summits of Bidean nam Bian
Name Grid ref Height Status
Bidean nam Bian NN143542 1150 m (3773 ft) Munro, Marilyn
Stob Coire nan Lochan NN148548 1115 m (3658 ft) Munro top
Stob Coire nam Beith NN139545 1107 m (3632 ft) Munro top
Stob Coire Sgreamhach NN154536 1072 m (3517 ft) Munro

Ascent routes

2011-05 Schotland Beinn Fhada - Gearr Aonach - Aonach Dubh
The Three Sisters, seen from Glen Coe: Beinn Fhada, Gearr Aonach, and Aonach Dubh.
Coire Gabhail looking up to Bealach Dearg
Coire Gabhail, the Lost Valley or Hidden Glen, leads up to the Bidean ridge: the peak of Stob Coire Sgreamhach is left of centre, with the slopes of Gearr Aonach to the right.
Coire nan Lochan 11-06-19
View from Glen Coe car park, looking up Coire nan Lochan to Stob Coire nan Lochan, with Aonach Dubh to the right.

There are several routes up onto Bidean nam Bian. One may continue from Coire Gabhail (the hidden valley), reaching the main ridge by means of a zig-zag path that climbs up the flank of Gearr Aonach to cliffs at the head of the corrie, and a patch of scree at the bealach up to the ridge. From here, turn left to climb Stob Coire Sgreamhach which lies only about 0.5 km to the southeast, or right up along the cliff edge towards the summit of Bidean.

Other routes include ascending Stob Coire nan Lochan and then using the connecting ridge to reach the main summit, or ascending via the Allt Coire nam Beitheach and following either branch of this burn to reach the main ridge either side of the subsidiary peak of Stob Coire nam Beith, which lies about a kilometre to the west of the main summit.

All of the above routes start from Glen Coe and go through the corries running between the Three Sisters, and may thus be combined to allow a traverse of the mountain. Due to the accessibility of Bidean from the north, routes on the southern side are used much less frequently.


On 19 January 2013 four people were killed in an avalanche close to Church Door Buttress on the north side of Bidean nam Bian. A fifth person was airlifted to hospital with serious injuries and a sixth escaped unharmed. It was the worst avalanche in Scottish history and the worst in the UK since the Lewes avalanche in 1836.

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