World's Largest Iceberg A23a Breaks Free After 30 Years Stuck on Seafloor

The world's largest and oldest iceberg, A23a, weighing over one trillion tonnes and twice the size of Greater London, has finally broken free after being stuck for over 30 years. Calved from Antarctica's Filchner Ice Shelf in 1986, the iceberg was held in place by the Taylor Column, a unique oceanic phenomenon, spinning in the Weddell Sea