A large iceberg is seen drifting away from Chile's Grey Glacier on Tuesday, Nov. 28, 2017.

(National Forestry Corporation Chile)

At a Glance

A large iceberg has broken off the Grey Glacier in southern Chile's Torres del Paine National Park.The glacier measured more than 1,000 feet long by 1,000 feet wide.Glaciologists were not surprised that it broke off, but they didn't expect it to be so big.

For the first time since the early 1990s, alarge iceberg has broken free from a Chilean glacier, and experts say it was larger than initially expected.

The chunk of ice was previously connected to the Grey Glacier , according to the Guardian. The iceberg is huge, measuring more than 1,000 feet long by 1,000 feet wide, the report added.

An image released Tuesday by the country's National Forest Corporation showed the iceberg after it had broken off the glacier.

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Scientists have yet to determine , Sky News reported, but climate change is a possibility. Keep in mind that this is a rare occurrence, and it has been more than two decades since the last iceberg broke free from the glacier.

"The retreat of the Grey Glacier is a process that has been constant and accelerated in recent times and is very likely to have to do with climate change," park superintendent Michael Arcos told Sky News.

Boats will closely monitor the iceberg as well, as it could break up , Antena 3 TV reported.

Torres del Paineis one of Chile's most popular parks and had more than 250,000 visitors last year, Sky News said.