Measuring roughly 1,350 square miles (3,500 square kilometers) across, A23a is the world's largest and oldest iceberg according to AFP News. Its imposing size and slow, steady movement have captivated oceanographers and researchers alike, though predicting its exact path has proven difficult due to the unpredictable forces of ocean currents.

The trillion-ton slab of ice named A23a could slam into South Georgia Island and get stuck or be guided around it by currents.

This is not the first time an iceberg has posed a threat to South Georgia. In 2004, iceberg A38 "grounded on its continental shelf, leaving dead penguin chicks and seal pups on beaches as massive ice chunks blocked their access to feeding grounds,

A23a, a massive iceberg nearly the size of Rhode Island, towering at 40 meters, is on a collision course with South Georgia.

The world's biggest iceberg—more than twice the size of London—could drift towards a remote island where a scientist warns it risks disrupting feeding for baby penguins and seals.

The slab of ice — named A23a — weighs almost one trillion tonnes and could slam into South Georgia Island before either getting stuck or being guided around the land by currents.

Incredible new satellite images show the world's largest iceberg on a potential collision course with South Georgia Island. On Jan. 22, NOAA’s GOES East satellite captured imagery of A23a slowly drifting northeastward in the Southern Ocean.

The world's largest iceberg, A23a, is on a collision course with South Georgia Island, raising alarms for local wildlife. Penguins and seals may face starvation as the massive ice block disrupts access to their feeding grounds.