Quote from John Wesley Powell at start of the book: "We are now ready to start on our way down the Great Unknown...We are three quarters of a mile in the depths of the earth ...We have an unknown distance yet to run; an unknown river yet to explore. What falls there are, we know not; what rocks beset the channel, we known not; what walls rise over the river, we know not. Ah, well! We may conjecture many things. The men talk as cheerfully as ever; jests are bandied about freely this morning; but to me the cheer is somber and the jests are ghastly.
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Book Description Harper Collins, 5-23, 2001. Hardcover. Book Condition: New. Dust Jacket Condition: No Dust Jacket. Fast shipping with a tracking #. Ships from the US. International shipping may take longer due to customs. ; 9.40 X 6.40 X 1.40 inches; New. Bookseller Inventory # 507777