Zac Efron Niagara Falls without water, 1969
For six months in the summer and fall of 1969, Niagara’s American Falls were “de-watered”, as the Army Corps of Engineers conducted a geological survey of the falls’ rock face, concerned that it was becoming destabilized by erosion. These stark images reveal North America’s iconic – and most powerful – waterfall to be almost as dry as a desert.
