[j.havenfarm]

Oh my. I wonder what happens when that wall collapses

[Jonty30]

It could result in a mega-tsunami.

https://www.youtube.com/watch?v=6utAunBKXV4

[brianr10]

Supposedly, there is a cliff in the Azores, or the Canary Islands (I forget which) that, if it fell into the sea, would cause a huge Tsunami that would inubdate all the liberal areas along the East coast.

[JimRed]

Oh my. I wonder what happens when that wall collapses

Depending on the angle and rate of collapse, it could cause a 200 foot high tsunami on the U.S East Coast and in the Caribbean Islands, Bermuda and Bahamas. With about eight hours warning.