Moraine Park - Rocky Mountain National Park
At least four periods of glaciation occurred, interspersed with warmer, drier weather to shape Rocky Mountain National Park. The latest, around 28,000 years ago, is credited with creating the landscape in the Moraine Park section of the national park. Rock formations in the park are among the oldest in the United States, having been formed at least 1.7 billion years ago, when movements of the earth's crust created heat and pressure on deeply buried sediments left from an earlier inland sea.
