Lake Powell"s sapphire waters sparkle amid canyons of red rock, its myriad patterns of water and stone made vibrant by hard desert light. in Lake Powell: A Photographic Essay of Glen Canyon National Recreation Area, photographer Gary Ladd explores the area"s beauty, including the lake"s ninety-six trickling side canyons. Interpretive text by Southwest writer Anne Markward details the history of the area, Glen Canyon Dam"s completion in 1963, and the environmental challenges Lake Powell continues to present.