MANILA, Philippines — A pyroclastic density current (PDC), locally known as “uson,” was observed at Mayon Volcano on Saturday ...

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 ...

The Philippine Institute of Volcanology and Seismology on Saturday afternoon reported an ongoing pyroclastic density current ...

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 ...

JAKARTA: Indonesia's Mount Semeru located on the border of Lumajang and Malang regencies in East Java, erupted multiple times on Monday (April 13), sending ash columns up to 1,000 metres above its ...