Season 2 Episodes13
Cast1

Corey Johnson
Self - Narrator (voice)
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Ranked #2 of 13 in Season 2•+0.4 vs season avg
From Alaska to New Mexico, the Rockies are one of the great mountain belts of the world--caused by tectonic forces of the Pacific Plate pushing against the North American continent. They have formed as the earth's continental crust has been shortened under pressure--by around 1

Corey Johnson
Self - Narrator (voice)
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"The Rockies" is episode 6 of How the Earth Was Made season 2. It scored 8.7/10 from 28 votes, ranking #2 of 13 episodes this season (season average 8.3). It aired on December 22, 2009.