Portal:Mountains
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Introduction

A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (980 ft) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges.
Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers.
High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and climate, mountains tend to be used less for agriculture and more for resource extraction, such as mining and logging, along with recreation, such as mountain climbing and skiing.
The highest mountain on Earth is Mount Everest in the Himalayas of Asia, whose summit is 8,850 m (29,035 ft) above mean sea level. The highest known mountain on any planet in the Solar System is Olympus Mons on Mars at 21,171 m (69,459 ft). The tallest mountain including submarine terrain is Mauna Kea in Hawaii from its underwater base at 9,330 m (30,610 ft); some scientists consider it to be the tallest on earth. (Full article...)
Selected mountain-related landform
A valley is an elongated low area often running between hills or mountains and typically containing a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in valleys in high mountains or polar areas.
At lower latitudes and altitudes, these glacially formed valleys may have been created or enlarged during ice ages but now are ice-free and occupied by streams or rivers. In desert areas, valleys may be entirely dry or carry a watercourse only rarely. In areas of limestone bedrock, dry valleys may also result from drainage now taking place underground rather than at the surface. Rift valleys arise principally from earth movements, rather than erosion. Many different types of valleys are described by geographers, using terms that may be global in use or else applied only locally. (Full article...)
Selected mountain range
The Gjelsvik Mountains are a group of mountains about 25 nautical miles (50 km) long, between the Sverdrup Mountains and the Mühlig-Hofmann Mountains in Queen Maud Land, East Antarctica. With its summit at 2,705 metres (8,875 ft), the massive Risemedet Mountain forms the highest point in these mountains, also marking their eastern end. (Full article...)
Selected mountain type

A mountain range or hill range is a series of mountains or hills arranged in a line and connected by high ground. A mountain system or mountain belt is a group of mountain ranges with similarity in form, structure, and alignment that have arisen from the same cause, usually an orogeny. Mountain ranges are formed by a variety of geological processes, but most of the significant ones on Earth are the result of plate tectonics. Mountain ranges are also found on many planetary mass objects in the Solar System and are likely a feature of most terrestrial planets.
Mountain ranges are usually segmented by highlands or mountain passes and valleys. Individual mountains within the same mountain range do not necessarily have the same geologic structure or petrology. They may be a mix of different orogenic expressions and terranes, for example thrust sheets, uplifted blocks, fold mountains, and volcanic landforms resulting in a variety of rock types. (Full article...)
Selected climbing article

A spring-loaded camming device (also SLCD, cam or friend) is a piece of rock climbing or mountaineering protection equipment. It consists of two, three, or four cams mounted on a common axle or two adjacent axles, so that pulling on the axle forces the cams to spread further apart. It is then attached to a sling and carabiner at the end of the stem. The SLCD is used by pulling on the "trigger" (a small handle) so that the cams retract together, then inserting it into a crack or pocket in the rock and releasing the trigger to allow the cams to expand. A pull on the rope, such as that generated by a climber falling, will cause a properly placed SLCD to convert the pulling force along the stem of the unit into outwards pressure on the rock, producing massive amounts of friction and preventing the removal of the unit from the rock. Due to the large forces exerted on the rock when an SLCD is fallen on, it is very important that SLCDs are only placed in solid, strong rock. (Full article...)
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Selected skiing article
Birkebeinerrennet (lit. The Birkebeiner race) is a long-distance cross-country ski marathon held annually in Norway. It debuted in 1932 and has been a part of Worldloppet since Worldloppet's inception in 1979.
The Birkebeinerrennet is one of three races held under the Birkebeiner moniker, the other two being Birkebeinerrittet (bicycling) and Birkebeinerløpet (cross-country running). (Full article...)
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Topics

- Africa: Atlas • Kilimanjaro • Mount Kenya massif • Ruwenzori Mountains
- America: Andes • Appalachians • Cascades • Cordilleras • Rockies • Sierra Nevada
- Antarctica: Sentinel Range
- Asia: Altai • Himalaya • Hindu Kush • Caucasus • Karakoram • Pamir
- Australia and Oceania: Maoke Mountains • New Zealand Alps • Snowy Mountains
- Europe: Alps • Ardennes • Balkans • Highlands • Jura • Carpathians • Pyrenees • Scandinavian Mountains • Urals • Vosges

- Alps: Piz Badile • Mont Blanc • Petit Dru • Dufourspitze • Eiger • Großglockner • Grandes Jorasses • Jungfrau • Königspitze • Matterhorn • Mönch • Ortler • Watzmann • Drei Zinnen • Zugspitze
- Andes: Aconcagua • Alpamayo • Chimborazo • Cotopaxi • Fitz Roy • Nevado Huascarán • Illimani • Sajama • Ojos del Salado • Siula Grande • Cerro Torre • Yerupaja
- Himalayas: Eight-thousanders – Mount Everest • K2 • Kangchenjunga • Lhotse • Makalu • Cho Oyu • Dhaulagiri • Manaslu • Nanga Parbat • Annapurna I • Hidden Peak • Broad Peak • Gasherbrum II • Shishapangma – Other – Ama Dablam • Chogolisa • Masherbrum • Shivling
- Rocky Mountains: Mount Chephren • Mount Elbert • Mount Logan • Denali • Mount Robson
- Volcanos: Etna • Eldfell • Hohentwiel • Mauna Kea • Pinatubo • Puʻu ʻŌʻō • Mount St. Helens • Stromboli • Mount Unzen
Flora and fauna

- Plants: Alpine Rock-Jasmine • Hairy Alpenrose • Edelweiss • Great Yellow Gentian • Glacier Crowfoot • Wulfenia • Dwarf Willow • Queen of the Andes • Arolla Pine
- Animals: Red-billed Chough • Alpine marmot • Alpine Salamander • Rock Ptarmigan • Alpine Ibex • Andean Condor • Bearded Vulture • Alpine Chough • Chamois • Mountain Burnet • European Viper • Himalayan Tahr • Wallcreeper • White-winged Snowfinch • Golden Eagle • Northern Bald Ibis • Yak

- Equipment: Ascenders • Belay devices • Carabiners • Maillons • Harnesses • Hexes • Nuts • Quickdraws • Ropes • Shoes • SLCDs • Slings • Tricams
- Techniques: Abseiling • Redpointing • Anchor • Mantle • Top roping • Climbing grade • Climbing route
- Types of climbing: Big wall climbing • Bouldering • Competition climbing • Free climbing • Ice climbing • Mountain climbing • Rock climbing • Schrofen • Sport climbing
- Klettersteigs: Mannlgrat
- Climbers: Kurt Albert • Pierre Allain •John Bachar • Henry Barber • Catherine Destivelle • Patrick Edlinger • John Gill • Stefan Glowacz • Wolfgang Güllich • Lynn Hill • Alex Honnold • Alexander Huber • John Long • Jeff Lowe • Magnus Midtbø • Adam Ondra • Dean Potter • Alain Robert • Chris Sharma • Todd Skinner • Ueli Steck • Other climbers

- Mountaineering: Alpine Clubs • Boots • Crampons • Ice axes • Mountain huts • Mountain rescue • Ropes • Rucksacks
- Pioneers: Christian Almer • Melchior Anderegg • Hermann von Barth • Walter Bonatti • Meta Brevoort • William Martin Conway • Angelo Dibona • Hans Dülfer • Paul Grohmann • Adolphus Warburton Moore • Paul Preuss • Ludwig Purtscheller • Schlagintweit brothers • Leslie Stephen • Gottlieb Samuel Studer • Tenzig Norgay • Herbert Tichy • Lucy Walker • Edward Whymper • Georg Winkler • Matthias Zurbriggen
- High-altitude mountaineers: Chris Bonington • Hermann Buhl • Kurt Diemberger • Ralf Dujmovits • Günther Dyhrenfurth • Maurice Herzog • Sir Edmund Hillary • Sandy Irvine • Gerlinde Kaltenbrunner • George Mallory • Nives Meroi • Reinhold Messner • Simone Moro • Oh Eun-sun • Edurne Pasaban • Wanda Rutkiewicz • Lionel Terray • Um Hong-Gil • Stephen Venables • Ed Viesturs • Other mountaineers
- Publicists: Karl Blodig • W. A. B. Coolidge • David Breashears • Jon Krakauer • Gaston Rébuffat
- Alps: Eiger climbing history • Exploration of the High Alps • Golden age of alpinism • Silver age of alpinism • Timeline of climbing the Matterhorn
- Himalayas: 1922 British Mount Everest expedition • 1924 British Mount Everest expedition • 1953 British Mount Everest expedition • 1986 K2 disaster • 1996 Mount Everest disaster • 2008 K2 disaster • Timeline of climbing Mount Everest
- Museums: Alpine Club Museum • Messner Mountain Museum
Lists of mountains
Recognized content
- Featured content
- Good content
Amak Volcano
Ben Nevis
Gerlachovský štít
Glacier Peak
Hualālai
Huangshan
Kohala (mountain)
Mont Aiguille
Mont Blanc massif
Montpelier Hill
Mount Adams (Washington)
Mount Bailey (Oregon)
Mount Baker
Mount Cleveland (Alaska)
Mount Edziza volcanic complex
Mount Elbert
Mount Garibaldi
Mount Hood
Mount Kenya
Mount Rainier
Mount Redoubt
Mount Tehama
Mount Thielsen
Mount Vesuvius
Pinkham Notch
Roxy Ann Peak
Silverthrone Caldera
Snowdon
Wells Gray-Clearwater volcanic field
Wilkins Peak
Yamsay Mountain
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