Iceberg A-68a broke off from Antarctica's Larsen Ice Shelf in September 2017. It has drifted more or less intact since then, and later this month will very likely hit South Georgia Island in the south Atlantic:
[UK] Government officials have been tracking the 4,200-square-km iceberg closely with the help of the British Royal Air Force, who conducted a reconnaissance mission over the iceberg capturing photos and videos of the large mass.
“The sheer size of the A68a iceberg means it is impossible to capture its entirety in one single shot,” British officials said in a statement.
As of now, the iceberg is just 150 kilometers from the territory, according to BBC News. If it does collide with South Georgia Island scientists warn that it could threaten the wildlife ecosystem and animals' access to food. A large number of whales, seals, and penguins feed off the coast of South Georgia.
This NASA photo from November 5th shows the berg about 200 km from where it is today:
South Georgia Island is a British overseas territory.