In the last 12,000 years, Niagara Falls has moved 7 miles upstream from erosion

Amazing and weird fact about Niagara Falls: 

Did You Know? In the last 12,000 years, Niagara Falls has moved 7 miles upstream from erosion. Its current rate of erosion, which has been reduced greatly, is estimated at 1 foot per year. - WTF Fun Fact

Source: https://www.history.com/topics/landmarks/niagara-falls

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