![Exploring a tunnel deep below Niagara Falls](https://ic-cdn.flipboard.com/ctvnews.ca/20a7e936cd41b8341e71b7fc3ca6ead671da5740/_large.jpeg)
NIAGARA FALLS, Ont. - Turbines that once harnessed the powerful energy of Niagara Falls into a great source of electricity came to a halt years ago. …
* View the article originally published here. ** More curations: Al Cannistra at San Antonio ONE here.