These aspen appeared especially vibrant against the dark backdrop of the boulder. Near Hagerman Pass, Colorado - September 2012

Sunrise lights up the flanks of Longs Peak, framed by the stunning autumn aspen above Bear Lake. Rocky Mountain National Park, Colorado - September 2018

A golden leaf-lined trail.  Near Kebler Pass, Colorado - October 2009

Late evening sun filters through the canopy of an autumn aspen forest. Near Steamboat Springs, Colorado - September 2019

An autumn afternoon at the iconic Crystal Mill. Near Marble, Colorado - October 2019

Rock Spires rise among golden autumn aspen. Near Silver Jack Reservoir, Colorado - October 2015

Golden aspen reach into the blue. San Juan Mountains, Colorado - October 2021

Morning sun bursts through the aspen forest, casting beams across the carpet of corn lillies. Kebler Pass, Colorado - June 2022

Aspen glow under late evening twilight. Kebler Pass, Colorado - October 2021

Sunset over the Dallas Divide. Near Ridgway, Colorado - October 2014

A moody sunrise light up the Maroon Bells with the aspen in full autumn color.  Near Aspen, Colorado - September 2014

Sunset over rolling hills of aspen near Owl Creek Pass, Colorado - September 2012

Golden autumn aspen frame Longs Peak above Bear Lake. Rocky Mountain National Park, Colorado - Septmeber 2009

An evening storm rolls over the forest, causing the setting sun to cast a rainbow over the endless expanse of golden aspen that make up the Gunnison National Forest of Colorado.  September 2014

Aspen tower over a lush undergrowth of corn lily and early summer wildflowers. Near Crested Butte, Colorado - June 2010

Aspen details.  Rocky Mountain National Park - September 2011

Golden aspen at sunset under the Beckwith Mountains.  Kebler Pass, Colorado - September 2012

Aspen reflect in a leaf-lined pond near Kebler Pass, Colorado - September 2011

An old barn stands in front of golden hills of aspen. Near Telluride, Colorado - October 2015

White River National Forest, Colorado - September 2012

An aspen grove in the fall. Near Kebler Pass, Colorado - September 2012

A snow and rain storm over Bear Lake with early autumn colors. Rocky Mountain National Park, Colorado - September 2015

A brilliant red-orange aspen tree glows in afternoon light below the Sneffels Range. Near Ridgway, Colorado - October 2018

Light and shadow play inside an aspen forest. Gunnison County, Colorado - September 2018

Sunrise over the Capitol Creek Valley with the aspen at peak color.  The tip of Capitol peak hides in the clouds.  Near Snowmass, Colorado - September 2012

A small road winds through an autumn aspen grove. Routt National Forest, Colorado - September 2012

Autumn colors in the West Elk Wilderness of Colorado - September 2018