Ice wall twice the size of Greater London runs aground near British island - The nearly one-trillion-tonne block of ice, known as A23a, has grounded on the continental shelf off South Georgia island

The world’s biggest iceberg appears to have run aground roughly 70 kilometres from a remote Antarctic island. The world’s biggest iceberg appears to have run aground roughly 70 kilometres from a remote Antarctic island, potentially sparing the crucial wildlife haven from being hit, a research organisation said on Tuesday.

The world's largest iceberg appears to have run aground off the coast of a remote British island home to millions of penguins and seals — potentially threatening local wildlife, but also providing an opportunity for research into such rare "megabergs.