The Lake Powell reservoir in Utah, created by the Glen Canyon Dam, provides hydropower to 5 million people in seven states. Now, alarmingly low water levels in the lake and a 22-year megadrought are plunging the area into crisis, while the canyon’s landscape seems to be returning to its natural state for the first time in more than 50 years.

Find out more about how the drought has uncovered a lot more than folks realized was there.