• Photo of park visitors enjoying sunset from the Alpine Ridge Trail in Rocky Mountain National Park.

    Rocky Mountain

    National Park Colorado

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  • Impacts from September 2013 Flood - Old Fall River Road, Alluvial Fan and Trails

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Lenticular Clouds

a photo of  lenticular clouds
Lenticular clouds result from stable, moist air masses and strong winds in mountain environments.
Photo copyright University Corporation for Atmospheric Research, photo by Carlye Calvin.

Did You Know?

a photo of the mountains at treeline

Temperature causes tree line. Trees need an average growing temperature of about 50 degrees fahrenheit.