Three-thousander


Three-thousanders are mountains with a height of between, but less than above sea level. Similar terms are commonly used for mountains of other height brackets e. g. four-thousanders or eight-thousanders. In Britain, the term may refer to mountains above.

Climatological significance

In temperate latitudes three-thousanders play an important role, because even in summer they lie below the zero degree line for weeks. Thus the chains of three-thousanders always form important climatic divides and support glaciation - in the Alps the contour is roughly the general limit of the "nival step"; only a few glaciated mountains are under . In the Mediterranean, however, the three-thousanders remain free of ice and, in the tropics, they are almost insignificant from a climatic perspective; here the snow line lies at around to, and in the dry continental areas it may be up to high.

Alpinism

The designation "three-thousander" is often used for touristic reasons where only a few individual summits exceed this height – e. g. in the Southern Alps, in the eastern part of Austria, in the Limestone Alps, in the Pyrenees or the rest of Europe. For example, the Parseierspitze in the Lechtal Alps at is the only three-thousander in the Northern Limestone Alps.
In the Alps or Pyrenees, expeditions to areas of over, with their often steep mountainsides and sudden changes in weather conditions, require mountaineers to have considerable experience and weatherproof equipment, which distinguishes them from ascents of many two-thousanders.
The term "easy three-thousander" or "Hikable three-thousander" describes mountains above with routes that do not pose any particular challenges. Typical "easy" three-thousanders, for example, include the Piz Boe in South Tyrol, which is an hour's walk from the Pordoi Cable Car, or the high Piz Umbrail, accessible from the Umbrail Pass. Amongst the highest easy three-thousanders in the Alps are the Üsser Barrhorn in the Wallis Alps and the Monte Vioz. For ascents of these mountains the main risk is the lack of acclimatisation at these heights. The highest technically accessible three-thousanders in the Alps are the Klein Matterhorn near Zermatt and the Aiguille du Midi on Mont Blanc.

Alps

The easternmost three-thousanders in the Alps are in the Hafner Group in the east of the High Tauern. The northernmost 3,000ers are in the northern chains of the High Tauern, Zillertal, Ötztal, and Stubai Alps. The southernmost 3,000ers are on the main chain of the Maritime Alps, the Mercantour and the Pelat Group with about a dozen main peaks over above sea level. In the eastern Alps the southern boundary lies in the Bergamo Alps, of the Adamello–Presanella Group and the Dolomites. So the ranges of the Alps that contain mountains over the 3,000 m mark comprise roughly two thirds of the area, the 3,000er zone in the Western Alps coming much closer to the edge of the Alpin region than in the Eastern Alps with their extensive system of foothills. The easternmost 3,000er is over from the Pannonian Alpine perimeter, the westernmost only about from the Rhone valley. A large part of this sensitive, high Alpine region is protected by conservation areas, but it also forms the touristic heart of the Alps.
Easternmost three-thousander in the Alps:Mittlerer Sonnblick3,000 mAustria
Westernmost three-thousander in the Alps:Le Rochail3,023 mFrance
Northernmost three-thousander in the Alps:Kempsenkopf3,090 mAustria
Southernmost three-thousander in the Alps:Mont Clapier3,045 mItaly/France

Switzerland, France, Austria, and Italy have many hundreds of Alpine peaks over 3,000 metres. Germany's Zugspitze, at, just falls below the line, whilst Slovenia's Triglav is well under it. Liechtenstein, despite being the only country lying entirely within the Alps, has no 3,000ers on its territory.

Rest of Europe

Apart from the Alps, the dominant range in Europe – if one excludes the Caucasus, which otherwise, in Mount Elbrus, would have the highest mountain in the continent – only the following ranges have three-thousanders:
Musala at 2,925 m, the highest mountain in southern Europe, does not come close to the mark. The Apennine Mountains reach 2,912 m in the Gran Sasso. The Dinaric Alps, Carpathian Mountains, Sistema Central and Cantabrian Mountains are less than 2,700 m high, and the other ranges in Europe are below 2,500 m.