When they got word that a new iceberg, named A-84, had broken off, they shifted their work to see what was revealed on a seabed that had been covered by almost 500 feet of ice for centuries.

Southwest of South Georgia and stretching further than the eye can see, Iceberg A23a is 40 miles wide and a total of 3,100 Sq Km, making it larger than Greater London. It is also estimated to be ...