This Poster Is The Best Detailed On The Melting Effects Of Permafrost, Collapsing Land Mass Up To A 1KM THICK DEEP!
Melting Permafrost Hollows Out AS Deep To The Thickness Of The Permafrost Itself. 10Ft Deep Ice = 10Ft HOLE!, 100Ft Deep Ice =100Ft HOLE, Ice Spread 100 KM= Melts 100KM= SINKHOLE!