Here’s a rare look at Niagara Falls without water, which “has never been seen before or since the six months in July 1969 when U.S. engineers set about restructuring the American side of the twin landmark.” Video after the break. Click here for more pictures.

The team, made up of U.S. Army Corp of Engineers, blew up their temporary dam in November 1969 and six million cubic feet of water once again thundered over the falls’ sides every minute.

[via DailyMail]