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Want to travel 1.7 billion years back in time? As you walk down the steep, dusty switchbacks of Bright Angel Trail, you will. On your journey into the depths of the Grand Canyon, you'll learn the origins and geology of each rock layer and see the Colorado River continuing to grind the canyon away. Pack light and drunk plenty of water because the hot Arizona sun can quickly sap your strength. But remember to bring your imagination, because the ancient worlds you'll see along the way will astound you.
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