18th Annual Smithsonian Magazine Photo Contest Natural World
A work of thousands of years - the Yellowstone River valley.

The Yellowstone River continues to carve this massive valley, a work millions of years in the making. The picture is taken from a peak trail in the Yellowstone National Park, looking out over the river valley.

Photo Detail
Date Taken: 11.2018
Date Uploaded: 11.2020
Camera: Canon PowerShot SX50 HS
Copyright: © Bill Riggio