Finds of Cody knives, Agate Basin, Allen, Clovis, Eden, and Meserve points indicate that the Colorado Front Range was occupied at least 7000 to 8000 years ago. Apparently Folsom hunters avoided the higher altitudes, but Clovis hunters may have crossed the Continental Divide.
Archeological materials from 8.5 meters of deposits in a stratified rock shelter in the Absaroka Mountains near Yellowstone National Park provide a projectile point sequence and cultutral record beginning more than 9000 years ago, and include evidence of human occupation durnig the Altithermal period.
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