A 300-metre wide, 1,000-meter high rock slid into the sea causing the initial wave and more of the rock face is unstable.

The town of Nuugaatsiaq on Greenland's west coast was hit by a tsunami on Sunday devastating the town and the people living there. The people were evacuated by helicopters.

A massive wave of ice and water in 2012 caused the amount of ice lost from the Rink Glacier to increase by more than 50 percent