Over 300 years ago the northwest coast of America was hit by a powerful earthquake that caused numerous fires and also triggered a massive tsunami on that day hundreds of settlements went underwater thousands of people went missing the reason for everything was Cascadia this is the so-called subduction zone the place where one tectonic plate converges on another every 250 years there’s a shift in Cascadia that results in an earthquake with a magnitude greater than eight and you know what
cascadia’s time has come again how do we know the danger is creeping up
