Back to Colorado Postcards
Denver Public Library Special Collections (Rh-567)

Glenwood Canyon

Millions of years ago, the Colorado river carved Glenwood Canyon. A narrow winding way with walls 1000 feet high, the canyon's first human traffic made way on foot. When westward pioneers arrived in wagons, they dug out a wider trail passable only in summer. Then the railroad blasted through, then a dirt road, then a paved two lane highway.

But when an interstate was proposed, there was pushback. John Denver joined the resistance and threw a rock across the canyon to prove its narrowness. Studies to minimize impact went back and forth for years

To snake an interstate through this slot required innovations. And when I-70 finally opened in 1992 this 12-mile section marked the end of a nationwide project begun in the Eisenhower era. Watch for rock slides now and then. But also Marvel at the majesty of Glenwood Canyon.


About Colorado Postcards

Colorado Postcards are snapshots of our colorful state in sound. They give brief insights into our people and places, our flora and fauna, and our past and present, from every corner of Colorado.


More like this

Mt. Sneffels

Mount Sneffels is one of Colorado’s most spectacular peaks and a photographer’s favorite. It’s the mountain on the face of the new Colorado driver’s license.

Sulphur Cave

Colorado has 16 National Natural Landmarks. You’d recognize many of them: scenic, iconic places like the Garden of the Gods, Hanging Lake.