WHAT caused the so called Mudflood...?

People often ask, why and how the mudflood happened.
After watching the full episode of this clip I soon realeyesed ...the penny kinda dropped for me.
This really does answer a lot of questions people tend to stumble over and waste previous time when they could be looking for something else that shines.

You are veiwing a clip from episode 2

Episode 1.  https://youtu.be/rf_inGOubEg

Episode 2. https://youtu.be