Colorado has the highest mean altitude of all the states.
•
Mesa Verde, Colorado features an elaborate four-story city carved in the cliffs by the Ancestral Pueblo people between 600 and 1300 A.D.
•
In 1859, John Gregory discovered "The Gregory Lode" in a gulch near Central City, Colorado. Within two weeks, the gold rush was on and within two months the population grew to 10,000 people in search of their fortune.