• Photo of golden aspen with Hallet Peak in the background. NPS Photo by J. Frank

    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 Abner Sprague buying a pass to Rocky Mountain National Park

Homesteader and lodge keeper Abner Sprague was the first person to pay to enter Rocky Mountain National Park. His fee was $3.