Colorado

Landscapes
The tallest dunes in North America at Great Sand Dunes National Park
Elk Mountains
Black Canyon of the Gunnison National Park
Rim Arch in the Black Ridge Canyons Wilderness
Hanging Lake

Four Corners
The Four Corners is a region of the United States consisting of the southwestern corner of Colorado, southeastern corner of Utah, northeastern corner of Arizona, and northwestern corner of New Mexico. It is the only location in the United States where four states meet.
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