Chautauqua Park: Flatiron #1, Photo Gallery, Boulder - Denver - Golden - Fort Collins - Lyons, Colorado

Chautauqua Park: Flatiron #1

Boulder - Denver - Golden - Fort Collins - Lyons

Boulder's iconic Flatirons are named so for the home-style tools they resemble. These distinctly shaped rocks are remnants of the Fountain Formation, a feldspar-rich sand eroded from the ancestral Rocky Mountain uplift 300 million years ago. Sediments deposited by inland oceans compressed this layer into sandstone, thrust upward 45 million years ago by the same forces that created our modern Rocky Mountains. A short but challenging hike leads from Chautauqua Park to the backside with exceptional views across the Colorado Front Range and Continental Divide.

Related Trails: Flatiron #1
Flatiron Loop Trail

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