Mesa Verde National Park - a national park in Colorado containing prehistoric cliff dwellings; semiarid landscape

Rocky Mountain National Park - a national park in Colorado having mountains and lakes and streams and forests

American state - one of the 50 states of the United States

U.S.A., United States, United States of America, US, USA, America, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776

Boulder - a town in north central Colorado; Rocky Mountains resort center and university town

Colorado Springs - a city in east central Colorado on the eatern edge of the Rocky Mountains; popular tourist center and site of the United States Air Force Academy

capital of Colorado, Denver, Mile-High City - the state capital and largest city of Colorado; located in central Colorado on the South Platte river

Pueblo - a city in Colorado south of Colorado Springs

Arkansas River, Arkansas - a river that rises in the Rocky Mountains in Colorado and flows southeast through Kansas and Oklahoma and through Arkansas to become a tributary of the Mississippi River

Colorado River, Colorado - a river in southwestern United States; rises in the Rocky Mountains of northern Colorado and flows southwest through Utah into Arizona (where it flows through the Grand Canyon) and then southward forming the border between California and Arizona and finally into Mexico where it empties into the Gulf of California; an important source of water in the southwestern United States

Colorado Plateau - a large plateau south and west of the Rocky Mountains; abuts mountains on the north and east and ends in an escarpment overlooking lowlands to the south and west; the Grand Canyon is carved out of the southwestern corner

North Platte, North Platte River - a river that rises in northern Colorado and flows northward into Wyoming and then eastward and southeastward through Nebraska where it joins the South Platte to form the Platte River

Pike's Peak - a mountain peak in the Rockies in central Colorado (14,109 feet high)

Republican River, Republican - a tributary of the Kansas River that flows from eastern Colorado eastward through Nebraska and Kansas

San Juan Mountains - a mountain range in southwestern Colorado that is part of the Rocky Mountains

Mount Sherman, Sherman - a peak in the Rocky Mountains in central Colorado (14,036 feet high)

South Platte, South Platte River - a tributary of the Platte River

Lone-Star State, Texas, TX - the second largest state; located in southwestern United States on the Gulf of Mexico

river - a large natural stream of water (larger than a creek); "the river was navigable for 50 miles"

Mexico, United Mexican States - a Republic in southern North America; became independent from Spain in 1810

Arizona, Grand Canyon State, AZ - a state in southwestern United States; site of the Grand Canyon

Centennial State, Colorado, CO - a state in west central United States in the Rocky Mountains

Beehive State, Mormon State, Utah, UT - a state in the western United States; settled in 1847 by Mormons led by Brigham Young

river - a large natural stream of water (larger than a creek); "the river was navigable for 50 miles"