The Platte Canyon is a deep narrow scenic gorge on the South
Platte River in the Rocky Mountains of Colorado. The South
Platte River is one of the two principal tributaries of the
Platte River and itself a major river of the American West,
located in the U Mountain peaks of the Rocky Mountains The Rocky
Mountains, often called the Rockies, are a Mountain range in
western North America. The State of Colorado ( or chiefly by
nonresidents) is a state located in the Rocky Mountain region of
the United States of America. The canyon is southwest of Denver
on the border between Jefferson and Douglas counties. The City
and County of Denver (pronounced /ˈdɛnvɚ/ is the Capital and the
most populous city of Colorado, in the United States Jefferson
County (ˈdʒɛfərsən ˈkaʊnti is the fourth most populous of the 64
counties of the State of Colorado of the United States. Douglas
County is the eighth most populous of the 64 counties of the
State of Colorado of the United States. The canyon is at the
entrance to the mountains,