0n May 24, 1869, a one-armed Civil War veteran named John Wesley Powell and a ragtag band of nine mountain men embarked on the last Great quest in the American West.
Drawing on rarely examined diaries and journals, Down the Great Unknown is the first.
Six survived.
The ten men set out Down the mighty Colorado River in wooden rowboats.
No one had ever explored the fabled Grand Canyon; to adventurers of that era it was a region almost as mysterious as Atlantis -- and as perilous. 0n May 24, 1869, a one-armed Civil War veteran named John Wesley Powell and a ragtag band of nine mountain men embarked on the last Great quest in the American West