An iceberg once deemed the largest in the world has shrunk to just about one-fifth of its original size, according to experts at the British Antarctic Survey .

The berg, known as A23a, has been rapidly disintegrating since May after drifting near South Georgia Island, which lies between South America and the Antarctic Peninsula.

The agency said the iceberg originally broke free from Antarctica’s ice shelf in 1986 but remained stuck in the Weddell Sea for decades before beginning its slow journey toward the island in 2020.

NOAA’s GOES-East satellite has captured imagery of the iceberg drifting in the powerful Antarctic Circumpolar Current.

The massive chunk of ice was once thought to be nearly the size of Rhode Island , but recent measurements estimate it at just over 600 square miles o

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