National Geographic : 1969 May
Riding the fury of the Colorado River, two of Maj. John Wesley Powell's four boats lunge through the Grand Canyon. Powell's epic 1,000-mile expedi tion down the Green and Colorado just 100 years ago unveiled the West's greatest wonder. In Powell's wake, a neoprene raft of the National Geographic's commemorative expe dition bounces through Lava Falls Rapids (next pages). Two such craft made a 300-mile voyage down Marble and Grand Canyons. Left to right: John Evans, Ron Smith, and the author. A remote-controlled camera rides the foredeck. KODACHROME BY WILLIAMBELKNAP,JR. © N.G.S .