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Chronicles the experiences of John Wesley Powell, who led the first scientific expedition down the Colorado River and through the Grand Canyon.

One hundred years ago John Wesley Powell set out to explore the Grand Canyon of the Colorado - something no man had attempted before. His official report of the voyage remains one of the great adventure stories in all the literature of the American West.

From the “dean of Western writers” (The New York Times) and the Pulitzer Prize winning–author of Angle of Repose and Crossing to Safety, a fascinating look at the old American West and the man who prophetically warned against the dangers of settling it In Beyond the Hundredth Meridian, Wallace Stegner recounts the sucesses and frustrations of John Wesley Powell, the distinguished ethnologist and geologist who explored the Colorado River, the Grand Canyon, and the homeland of Indian tribes of the American Southwest. A prophet without honor who had a profound understanding of the American West, Powell warned long ago of the dangers economic exploitation would pose to the West and spent a good deal of his life overcoming Washington politics in getting his message across. Only now, we may recognize just how accurate a prophet he was.

The Colorado River Basin’s importance cannot be overstated. Its living river system supplies water to roughly forty million people, contains Grand Canyon National Park, Bears Ears National Monument, and wide swaths of other public lands, and encompasses ancestral homelands of twenty-nine Native American tribes. John Wesley Powell, a one-armed Civil War veteran, explorer, scientist, and adept federal administrator, articulated a vision for Euro-American colonization of the “Arid Region” that has indelibly shaped the basin—a pattern that looms large not only in western history, but also in contemporary environmental and social policy. One hundred and fifty years after Powell’s epic 1869 Colorado River Exploring Expedition, this volume revisits Powell’s vision, examining its historical character and its relative influence on the Colorado River Basin’s cultural and physical landscape in modern times. In three parts, the volume unpacks Powell’s ideas on water, public lands, and Native Americans—ideas at once innovative, complex, and contradictory. With an eye toward climate change and a host of related challenges facing the basin, the volume turns to the future, reflecting on how—if at all—Powell’s legacy might inform our collective vision as we navigate a new “Great Unknown.”

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, ranking with the Lewis and Clark expedition and the Apollo landings on the moon. For nearly twenty years Lago has researched the Powell expedition from new angles, traveled to thirteen states, and looked into archives and other sources no one else has searched. He has come up with many important new documents that change and expand our basic understanding of the expedition by looking into Powell’s crewmembers, some of whom have been almost entirely ignored by Powell historians. Historians tended to assume that Powell was the whole story and that his crewmembers were irrelevant. More seriously, because several crew members made critical comments about Powell and his leadership, historians who admired Powell were eager to ignore and discredit them. Lago offers a feast of new and important material about the river trip, and it will significantly rewrite the story of Powell’s famous expedition. This book is not only a major work on the Powell expedition, but on the history of American exploration of the West.

Drawing on rarely examined diaries and journals, Down the Great Unknown is the first book to tell the full, dramatic story of the Powell expedition. On May 24, 1869 a one-armed Civil War veteran, John Wesley Powell and a ragtag band of nine mountain men embarked on the last great quest in the American West. The Grand Canyon, not explored before, was as mysterious as Atlantis—and as perilous. The ten men set out from Green River Station, Wyoming Territory down the Colorado in four wooden rowboats. Ninety-nine days later, six half-starved wretches came ashore near Callville, Arizona. Lewis and Clark opened the West in 1803, six decades later Powell and his scruffy band aimed to resolve the West’s last mystery. A brilliant narrative, a thrilling journey, a cast of memorable heroes—all these mark Down the Great Unknown, the true story of the last epic adventure on American soil.