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:''For the mathematical function known as a "Devil's staircase", see Singular function.'' The Aonach Eagach ( ) is a rocky ridge lying to the north of Glen Coe in the Scottish Highlands, boasting two Munro summits. In length the full ridge continues for 10 km from the Pap of Glencoe at the west to the eastern end at the ''Devil's Staircase''. The central section, some 2 km in length, is very rocky and the route along it requires scrambling ability. The slopes to each side are extremely dangerous, with steep grass and scree slopes hiding even steeper slopes which end in cliffs on both north and south sides of the ridge. The Aonach Eagach is usually regarded as the most difficult horizontal 'scrambling' ridge in mainland Scotland, though it vies with Liathach (and, in winter, An Teallach) for this title. In his book "Scrambles in Lochaber", local climber Noel Williams warns that there are no other ridges in the area that are "so narrow and so difficult to escape from once committed. Some sections are extremely exposed. This makes it a difficult outing to grade, because the technical difficulties are not great". Williams settled on grade 2, implying it is easier than the (optional) grade 2/3 approach scramble up A'Chailleach, but added a further warning (in bold type) that "there are no safe descents on the south side of the ridge". ==Traverse of the ridge== The Aonach Eagach is normally tackled from the Glen Coe (south) side in an east–west traverse. From Allt-na-reigh near the head of Glen Coe a good path ascends Am Bodach (a subsidiary Munro top) and continues westwards along the ridge to the first Munro proper, Meal Dearg. From here the summit of Sgorr nam Fiannaidh lies only two kilometres to the west, but a number of pinnacles must be scrambled over, and it is not uncommon for parties to take more than two hours to cross this seemingly short distance. There are a couple of sections where the use of a rope may prove prudent. In winter, the ridge is a fine expedition, though considerably harder than in summer (Scottish Winter Grade I/II), and many parties will go roped for some sections. Because of the short winter days, benightment on the ridge or its approaches is also not infrequent. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Aonach Eagach」の詳細全文を読む スポンサード リンク
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