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 makes it the current largest iceberg in the world. [2] [3] [4]

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.

6 days ago · The world’s largest iceberg is still on the move and there are fears that it could be headed north from Antarctica toward the island of South Georgia.. The iceberg, called A23a, was previously ...

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...

5 days ago · 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 1, 2023 · The world's largest iceberg, A23a, is moving into the open waters near Antarctica after being essentially stuck in place for decades. It's seen here in satellite imagery from Nov. 15.

Nov 24, 2023 · The world's biggest iceberg is on the move after more than 30 years being stuck to the ocean floor. The iceberg, called A23a, split from the Antarctic coastline in 1986.

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.

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...