When Engineers Drained The Niagara Falls In 1969, They Made A Stomach-Churning Discovery

It’s June 1969, and a team of engineers has succeeded in a Herculean task. Against the odds, they have stemmed the flow of Niagara Falls, thus silencing one of the most famous attractions on planet Earth. But as the water dries up for the first time in thousands of years, a secret is revealed on the rocks below – and it’s a horrific one, too.