alpine climate
backpacking
coniferous trees
elevation
erosion
exogeology
glacial lakes
glaciation
greenhouse effect
high mountains
hiking
ice climbing
large landform
lithospheric plates
microclimate
mountain ranges
mountain sickness
mountaineering
mountains rocks
orography
peak
relief
rock climbing
skiing
sky islands
snowboarding
spacing
steepness
subalpine forests
troposphere
tundra
volume