is a specific kind of: formation, geological formation.

instances of which are: Adirondack Mountains, Adirondacks | Admiralty Range | Alaska Range | Alleghenies, Allegheny Mountains | Alps, the Alps | Altai Mountains, Altay Mountains | Andes | Apennines | Appalachian Mountains, Appalachians | Atlas Mountains | Australian Alps | Balkan Mountain Range, Balkan Mountains, Balkans | Berkshire Hills, Berkshires | Black Hills | Blue Ridge, Blue Ridge Mountains | Cantabrian Mountains | Carpathian Mountains, Carpathians | Cascade Mountains, Cascade Range, Cascades | Catskill Mountains, Catskills | Caucasus, Caucasus Mountains | Coast Mountains, Coast Range | Cumberland Mountains, Cumberland Plateau | Dolomite Alps | Eastern Highlands, Great Dividing Range | Great Smoky Mountains | Green Mountains | Guadalupe Mountains | Himalaya, Himalaya Mountains, Himalayas | Hindu Kush, Hindu Kush Mountains | Karakoram, Karakoram Range, Karakorum Range, Mustagh, Mustagh Range | Kuenlun, Kuenlun Mountains, Kunlan Shan, Kunlun, Kunlun Mountains | Mesabi Range | Mount Carmel | Nan Ling | Ozark Mountains, Ozark Plateau, Ozarks | Pamir Mountains, the Pamirs | Pyrenees | Rhodope Mountains | Rockies, Rocky Mountains | Sacramento Mountains | San Juan Mountains | Sayan Mountains | Selkirk Mountains | sierra | Sierra Madre Occidental | Sierra Madre Oriental | High Sierra, Sierra Nevada, Sierra Nevada Mountains | Sierra Nevada | St. Elias Mountains, St. Elias Range | Taconic Mountains | Teton Range | Tien Shan, Tyan Shan | Transylvanian Alps | Tyrolean Alps | Ural Mountains, Urals ... show more.

has as a part: massif | mountain pass, notch, pass.