Michigan's Upper Peninsula isn't like California. No one is predicting it will break away and fall into Lake Superior. In fact, the UP had never experienced an earthquake in recorded history - until the Menominee Crack opened up in 2010.

Just outside of Menominee, which sits on the shores of Lake Superior on the Wisconsin border, a loud rumbling was heard and the earth shook on the morning of October 4, 2010. Local residents were very surprised to find a large crack in the ground. Scientists rushed to the area to see the mysterious and completely unexpected Menominee Crack. After years of study, there are perhaps some answers as to what caused the ground to open up.

The geographic feature is known as a pop-up. As to why the ground popped up? Michigan Tech's Dr Wayne Pennington told Science Daily,




This YouTube blogger captured footage of the crack just days after it occurred.

Even if a pop-up is a likely explanation. Having a seismic event in an area that appears to be fully dormant is exceedingly odd.

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This is The Ultimate Guide to Michigan Bigfoot Reports