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'River of fire' flows from Mount Etna during 'crazy' explosive outburst

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On June 2, 2025 , a giant, superhot avalanche of ash, known as a pyroclastic flow, suddenly exploded from near Mount Etna's summit and raced down its western flank.

The eruption also unleashed a giant plume of ash and volcanic gases high above the Italian island of Sicily .

The fiery river had gone largely unnoticed as people's focus was drawn to the towering volcanic plume.

A retired astronaut and former commander of the International Space Station Chris Hadfield shared the image on the social platform X on June 3 .