Colorado
coapostille.Com

A river of the southwest United States rising in the Rocky Mountains and flowing about 2,333 km (1,450 mi) southwest through the Colorado Plateau of western Colorado, southeast Utah, and western Arizona to the Gulf of California in northwest Mexico. In Arizona it flows along the borders of Nevada and California. The most spectacular of its many gorges is the Grand Canyon.
La Poudre Pass in the Rocky Mountain National Park.

Tags:  river southwest united states colorado plateau western colorado arizona california