U.S. Route 6 runs clear across the United States through some spectacular landscapes. It also touches areas, some remote, where brilliant and brave engineers and construction workers risked their lives to build a never-before-seen marvels.
On our kayak expedition, we had trouble identifying the source. In theory, it should be easy. To kayak source to sea, you find the river's start and follow it until it ends. On the upper Colorado, however, matters quickly become more complicated.