The world’s largest iceberg, named A23a, has formed massive arches and “caves.” This iceberg is currently drifting away from the shores of Antarctica. It is almost twice the size of London, according to CNN. Current appearance of the largest iceberg Images were captured from the deck of a ship operated by the EYOS Expeditions company, which is navigating along the section of the A23a iceberg. The photos reveal deep surface cracks as well as carved “caves” in the iceberg. The A23a iceberg is gradually diminishing as it moves farther north from Antarctica and encounters softer air and higher oce…