Spectacular images of what was the world's largest iceberg, A23a, show how erosion has chiselled huge arches and cave-like depressions into the colossus. — Photo: Ian Strachan/Eyos Expeditions/dpa
Once the largest iceberg in the world, A23a may soon vanish into the vastness of the ocean.
Covering about 4,000 square kilometres when it broke away, the iceberg - soberly named A23a - was once roughly twice the size of Greater London, the largest city by land mass in Western Europe.
