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An alpine route is a trail or climbing route through difficult terrain in high mountains such as the Alps, sometimes with no obvious path. In the Alps, the Alpine clubs define and mark an ''Alpine Route'', also called ''Alpinweg'' or ''Alpinwanderweg'' (Alpine hiking trail). More generally, the term is used for routes of crossing the Alps, such as Roman crossings and Napoleon crossing the Alps. It is also used to describe routes (trails, roads and railroads) in other mountains with alpine conditions. == Description == Alpine routes are typically neither built nor maintained. They grew from being used traditionally over years or decades. Occasionally, dangerous and exposed sections may be equipped with protection such as wire cables, chains, abseiling points and bolts. This is kept to a minimum ("die absolute Ausnahme", the absolute exception), for both the preservation of the environment and to prevent liability issues for those who install the devices.〔 Climber Paul Preuss argued in 1911 about the use of aids such as pitons on alpine routes in his essay "Artificial Aids on Alpine Routes".〔 In the Alps, the Alpine clubs mark their designated "Alpine Routes" in blue and white. In Austria and Germany the signs are blue-white-blue,〔 in Switzerland the signs for the so-called "Alpinwanderwege" are marked white-blue-white signs.〔 Sometimes the routes have no signs, only cairns ("Steinmandl", little stone man) or poles marking the way. Some routes require climbing skills of minor levels of difficulty (I and II according to UIAA).〔 To hike Alpine routes, climbers need physical fitness and good equipment, sure-footedness, and on some routes also a head for heights. They also need a good sense of direction and know to use maps and compass.〔〔 If they don't have alpine experience, they should use a mountain guide. Clothing has to be weatherproof. Some routes require climbing equipment such as ropes and ice axes, some even need crampons. It is of prime importance to check weather and route conditions beforehand.〔〔 Alpine routes are graded according to different systems. In Switzerland, an ''Alpinwanderweg'' is a marked hiking trail of the highest grade in difficulty according to the Swiss Alpine Club's hiking grades.〔 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「alpine route」の詳細全文を読む スポンサード リンク
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