What was the Grand Canyon before it became the Grand Canyon?
Sixty million years ago, the Rocky Mountains and the entire Colorado Plateau, which the Grand Canyon is part of, rose up from tectonic activity. After the top layers of rock (green) eroded away, the Colorado River grew powerful and began to cut its way through the ancient rock, leaving the stunning canyon we see today….
Read More “What was the Grand Canyon before it became the Grand Canyon?” »