[Rockhounds] Giant Impact Crater Might Be Hidden Under Greenland Icesheet

[Paul]

This is quite interesting.     :-)

Scientists Spot What May Be a Giant Impact Crater
Hidden Under Greenland Ice By Meghan Bartels,
Space.com, November 14, 2018
https://www.space.com/42431-giant-impact-crater-hidden-under-greenland-ice.html

Yours,

Paul H.