Ready to “fall” into the new year? All day today and tomorrow, you can catch Aerial America: New York and the other 49 states during our annual marathon! http://bit.ly/2z9pMee | Smithsonian Channel

The features that became #NiagaraFalls were created by the Wisconsin glaciation about 10,000 years ago. The same forces also created the North American Great Lakes and the Niagara River. All were dug by a continental ice sheet that drove through the area, deepening some river channels to form lakes, and damming others with debris. Scientists argue there is an old valley, St David's Buried Gorge, buried by glacial drift, at the approximate location of the present Welland Canal. Here is the wiki h

7.5K views · 910 reactions | Niagara Falls was formed when glaciers...