Mysterious, because it was seen by nobody except for perhaps a whale or a polar bear, the landslide and tsunami caused seismic instruments to vibrate all around the Earth, for 9 days.
Greenland Rock Slide Rang the Earth
Greenland Rock Slide Rang the Earth
Greenland Rock Slide Rang the Earth
Mysterious, because it was seen by nobody except for perhaps a whale or a polar bear, the landslide and tsunami caused seismic instruments to vibrate all around the Earth, for 9 days.