On July 2, 2026 a pyroclastic flow descends the backside of Semeru Volcano from this camera’s perspective, as seen from an ...

After an eruption, DIY cushions of gas help searing torrents of gas, ash, and rock spread miles from their source within a matter of minutes. Pyroclastic flows contain a deadly combination of hot rock ...

Unlike a regular camera view, the thermal perspective makes the temperature of the flow far more visible, highlighting the ...

Scientists think they’ve figured out how pyroclastic flows, fast-moving bringers of death during volcanic events, can travel such incredible distances and speeds despite the friction between the ...

Avalanches of ash, gas and rock that cascade downhill during volcanic eruptions may be even more dangerous than scientists had realized. Pulses of high pressure form within these slides, known as ...

A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ...

On Sunday, Guatemala's Volcán de Fuego -- "Volcano of Fire" -- erupted violently, spewing ash nearly four miles into the air and burying villages under an avalanche-like phenomenon called a ...