what is the large mountain range in the western united states?
Rocky Mountains
entailment
 One of the most dramatic evidences of this overthrust is visible in the form of Chief Mountain , an isolated peak on the edge of the eastern boundary of the park rising 2 @,@ 500 feet ( 800 m ) above the Great Plains . There are six mountains in the park over 10 @,@ 000 feet ( 3 @,@ 000 m ) in elevation , with Mount Cleveland at 10 @,@ 466 feet ( 3 @,@ 190 m ) being the tallest . Appropriately named Triple Divide Peak sends waters towards the Pacific Ocean , Hudson Bay , and Gulf of Mexico watersheds . This peak can effectively be considered to be the apex of the North American continent , although the mountain is only 8 @,@ 020 feet ( 2 @,@ 444 m ) above sea level . 

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 Western Region covers all of Alaska , Arizona , California , Colorado , Hawaii , Idaho , New Mexico , Nevada , Oregon , Utah , Washington , Wyoming , most of Montana , parts of Nebraska , South Dakota , and Texas , territories located in the Pacific Ocean , and members of the BSA Far East Council . 

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 = = = = Great Plains , Southwest , and Mountain = = = = 

entailment
 The Nemaha Range lies roughly 50 miles ( 80 km ) east of the Midcontinent rift , which forms a layer of basaltic rock around 1 @.@ 1 billion years old . This rift extends northward to Lake Superior and the surrounding area and southward to Kansas , then stops abruptly . Also present in the state is the Central Kansas Uplift , the faults of which produced several small earthquakes during the late 1980s . According to United States Geological Survey geophysicist Don Steeples , earthquakes at the Humboldt Zone have decreased and activity at the Uplift has increased . 

entailment
 The new survey included Alaska and Hawaii , which have large populations of indigenous people ; while the 2004 survey only included the contiguous 48 states . 
