This is what Niagara Falls looks like with the water turned off

dailymail.co.uk — In 1969, in order to stop the Niagara River eroding the American Falls, the U.S. Army Corp of Engineers constructed a dam consisting of 27,800 tons of rock, stopping the water for the first time in 12,000 years. Dec 16, 2010 View in Crawl 4

This is what Niagara Falls looks like with the water turned off