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Trivia about Zion and Bryce Canyon national parks

Trivia about Grand Canyon National Park.

John Wesley Powell's 1869 expedition down the Green and Colorado Rivers and through the Grand Canyon continues to be one of the most celebrated adventures in American history. For nearly twenty years Lago has researched the Powell expedition. Here he offers a feast of new and important material about the river trip, that will significantly rewrite the story of Powell's famous expedition.