It covers 3,500 km², two times the size of Greater London A23a, world’s largest iceberg 100 km 82 km Iceberg A23a South Pole Atlantic ocean South Georgia The Barron's news department was not involved in the creation of the content above.

The world’s largest iceberg is heading towards a remote British island and could threaten millions of penguins and seals that live there. The huge iceberg A23a measures almost 1,500 square miles, roughly twice the size of Greater London,

World's largest iceberg, A23a, is drifting towards the British island of South Georgia. A23a has been monitored for 30 years, since it first calved from Filchner ice shelf in Antarctica.