Volcanic Ash Covers Tonga

A thick layer of ash blanketed the island nation of Tonga following the eruption of the Hunga Tonga undersea volcano on Saturday. This Overview shows a neighborhood in the capital city of Nuku’alofa on January 18, 2022, just a few days after the eruption. Experts believe the event, which set off a sonic boom heard as far away as Alaska, was the largest volcanic eruption in more than 30 years.

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