The Giant Iceberg: Size and Background A23a measures an impressive 3,800 square kilometers, making it more than twice the size of Greater London.It originally calved from the Filchner Ice Shelf in ...

blue) and November 26 (red). Iceberg A23a is so big, the British Antarctic Survey calls it a “megaberg.” You could fit Greater London onto it two times over. A23a is the heavyweight iceberg ...

(CNN) — The world’s largest iceberg is still on the move and there are fears that it could be headed north from Antarctica towards the island of South Georgia. The iceberg, called A23a ...