Tourists in Iceland were met by the unexpected scene of an iceberg calving during a tour of the Jökulsárlón glacier lagoon.

The dramatic moment was captured in a viral video posted by @sabrina.gss and has racked up 1.1 million views since it was shared on July 9.

The caption of the post says: "Sooo this happened while we were doing a boat tour in the Glacier Lagoon."

In the clip, tourists can be heard marveling at the sight of the imposing iceberg, with one person saying "oh my god" just as a chunk of ice breaks off into the water.

Professor Mauri Pelto, a member of the science advisory board for NASA Earth Observatory and the director of the North Cascade Glacier Climate Project, told Newsweek that "this is quite a common occurrence even in this lagoon," noting that "in areas of

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