Pyroclastic density current (PDC): A turbulent, high-density flow composed of volcanic ash, lapilli and gases that descends rapidly along a volcano’s slope following an eruption.

CHRIS JACKSON: The fourth pyroclastic flow headed southeastwards towards Pompeii. The air would have been thick with the smell of sulfur dioxide, a very strong eggy smell.

A volcanic eruption in Italy left people scurrying for cover from what officials are saying is a pyroclastic flow. Several videos circulating online show people running as smoke from the side of ...

The defining event of Monday’s eruption was the rare pyroclastic flow from the southwestern crater, not visible from a distance. Updated June 4, 2025 at 3:45 a.m. June 3, 2025.

The event climaxed around 11:23 a.m. when the pyroclastic flow, triggered when magma mixed with snow, traveled 2 kilometers (more than a mile) to the Valle del Leone within a minute.

Lava fountaining regularly from the Philippines' most active volcano has flowed up to 3 kilometres from the crater in a dazzling but increasingly dangerous eruption. Mount Mayon has spewed lava up ...

A volcanic eruption in what’s now Morocco preserved ancient trilobite specimens in nearly pristine condition about half a billion years ago, according to a new study.

The event climaxed around 11:23 a.m. when the pyroclastic flow, triggered when magma mixed with snow, traveled 2 kilometers (more than a mile) to the Valle del Leone within a minute.