More than twice the size of greater London, the expanse of ice is unpredictable and dangerous.

The world’s largest iceberg ‘A23a’ broke away from the Filchner Ice Shelf in 1986 and is now drifting northwards.

The world's biggest iceberg is on a collision course with a tiny island in the South Atlantic. The massive ice chunk goes by the unassuming name of A23a. NICK HOLSCHUH: A23a is huge, 1,400 square ...

The world's largest iceberg which is visible from space is heading on a collision course towards a remote British territory.

The world's biggest iceberg — a wall of ice the size of Rhode Island — is lumbering toward a remote island off Antarctica that's home to millions of penguins and seals. The trillion-ton slab ...

The world's largest iceberg is on a collision course with a remote British island, potentially putting penguins and seals in ...

The world's largest iceberg is on a collision course with a remote British island, potentially putting ... Georgia's icy coves and beaches when past giant icebergs stopped them feeding.