15th Annual Smithsonian.com Photo Contest
Boulder Flatiron Morning
An early morning hike in Chautauqua Park up the Flatirons revealed an impressive site as the sun began to rise and light up the hillside. The Flatirons in Boulder were lifted and tilted into their present orientation between 35 and 80 million years ago.
© Rob Lantz.
All rights reserved.
||Nov. 29, 2017, 1:17 p.m.