A23a is a large tabular iceberg which calved from the Filchner–Ronne Ice Shelf in 1986. It was stuck on the sea bed for many years but then started moving in 2020. As of January 2025, its area is about 3,500 square kilometres (1,400 sq mi), which …

Welcome to the journey of Iceberg A23a, a colossal piece of ice that broke away from the Filchner Ice Shelf in Antarctica in 1986. For over three decades, A23a remained anchored in the Weddell Sea, but recent shifts in ocean currents have set it on a significant migration path.

Jan 23, 2025 · Spanning an area of 3,672 square kilometers (1,418 square miles) when measured in August — slightly smaller than Rhode Island and more than twice the size of London — the A23a iceberg has been...

Jan 24, 2025 · According to the U.S. National Ice Center—the global entity that names, tracks and documents Antarctic icebergs that meet specific size criteria—Iceberg A23a was 1062.22 nautical miles in area as of Jan. 16, 2025, an area roughly the size of Rhode Island.

Dec 16, 2024 · A23a has held the “largest current iceberg” title several times since the 1980s, occasionally being surpassed by larger but shorter-lived icebergs, including A68 in 2017 and A76 in 2021.

Aug 10, 2024 · The world's largest iceberg, A23a, is stuck again. For more than 30 years, the giant frozen block — equivalent to the size of Rhode Island — was grounded on the sea floor in Antarctic coastal...

Jan 16, 2024 · Erosion is sculpting dramatic features in the world's biggest iceberg in what's likely to be the final months of its existence. A ship run by the Eyos expeditions company arrived at the frozen...

The A23a iceberg - more than twice the size of Greater London - is on the move, travelling along what is known as "iceberg alley" towards South Georgia.

Aug 3, 2024 · Something remarkable has happened to A23a, the world's biggest iceberg. For months now it has been spinning on the spot just north of Antarctica when really it should be racing along with Earth's...

Aug 15, 2024 · The colossal iceberg known as A23a has been slowly spinning in one spot of the Southern Ocean since April. Here’s what experts have to say on the phenomenon.