Black Canyon of the Gunnison National Park The Black Canyon contains some of the oldest exposed rock on Earth. Precambrian, or “basement” rock, is nearly 2 billion years old. (Source: nps.gov)
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Black Canyon of the Gunnison National Park The Black Canyon contains some of the oldest exposed rock on Earth. Precambrian, or “basement” rock, is nearly 2 billion years old. (Source: nps.gov)
