When a volcano erupts, pyroclastic flows are often the biggest danger to anyone nearby. These fast-flowing currents of rock, ash and hot gas are extremely difficult to study, so researchers created their own. Read the related Nature Geoscience paper here: https://go.nature.com/2Im1bYs | Nature Portfolio

Pyroclastic flow observed at Semeru Volcano This sped-up (x7) footage shows a pyroclastic flow descending the slopes of Semeru. These flows consist of hot ash, gas, and fragmented rock moving rapidly under gravity. Semeru remains one of Indonesia’s most active volcanoes and is continuously monitored. Credit: CCTV Semeru #Semeru #Geology #GeologyPage #Volcanology #EarthScience #Indonesia | Geology Page