• Hikers on Granite Pass in Rocky Mountain National Park/NPS photo by John Marino

    Rocky Mountain

    National Park Colorado

  • Bear Lake Road Reconstruction Project

    Major construction work on Bear Lake Road in 2012 & 2013 includes mandatory use of park shuttles May 29-Oct 9 between 9 am–4 pm, delays, and some night closures. More »

Butterfly Species List

The parks diversity of elevations and habitat types helps account for the 140 confirmed species of butterflies found here. See the complete park butterfly species list.

 
Mead's Sulphur butterfly on an alpine wildflower.
The alpine tundra, krummholz, and subalpine openings in the park are the normal habitat of Mead's Sulphur (Colias meadii).
NPS Photo by Stacy Sink

Did You Know?

a photo of climbers on Longs Peak

The oldest person to summit Longs Peak was Rev. William Butler, who climbed it on September 2, 1926, his 85th birthday. In 1932, Clerin “Zumie” Zumwalt summited Longs Peak 53 times.