The beauty of the Colorado River was captivating to early explorers as its green-blue waters wound through the dramatic red canyons of northern Arizona. As a vital source of water in a rugged and desolate landscape in which few things could survive, the river seemed like a gift aiding their exploration—until they tried to cross it. It turns out there is only one place in hundreds of miles from which the river can be easily accessed from both sides, making travel in that area extremely difficult. Prior to the…