World’s biggest iceberg moving beyond Antarctic waters

A23a split from the Antarctic’s Filchner Ice Shelf in 1986, but it became stuck to the ocean floor and had remained for many years in the Weddell Sea

One of the world’s largest icebergs is drifting beyond Antarctic waters, after being grounded for more than three decades, according to the British Antarctic Survey.

The iceberg, known as A23a, split from the Antarctic’s Filchner Ice Shelf in 1986. But it became stuck to the ocean floor and had remained for many years in the Weddell Sea.

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