Glen Canyon National Recreation Area • Hidden within Lake Powell’s ever-changing shorelines are countless fingers running up side canyons, where flat water terminates at mucky stretches of sediments, deposited after the lake started filling behind Glen Canyon Dam. As the lake’s levels have fallen under the weight of drought and climate change, more of these canyon bottoms are seeing daylight, exposing a landscape that was sacrificed in the 1960s to feed the West’s agriculture and residential expansion...