The "Hard Shock:" The New Madrid Earthquakes.
https://www.youtube.com/watch?v=nj-cYe9yMNU&list=TLPQMTQxMDIwMjPo9RVavlGTAQ&index=19
https://www.youtube.com/watch?v=nj-cYe9yMNU&list=TLPQMTQxMDIwMjPo9RVavlGTAQ&index=19
The "Hard Shock:" The New Madrid Earthquakes.
https://www.youtube.com/watch?v=nj-cYe9yMNU&list=TLPQMTQxMDIwMjPo9RVavlGTAQ&index=19