In the summer of 1969, a group of engineers discovered that Niagra falls were hiding fascinating long-hidden secrets from the world. They realized they had to stop its water from flowing to unveil them. No one feared the unknown concealed beneath it, but they should have been.
For starters, you might think this all should be impossible – to stem the flow of Niagara Falls. Still, for these scientists, their curiosity drove them to outstanding mechanical achievements. Finally, in 1969, they stopped the water from the famous falls and uncovered something which never wanted to be found.