BREAKING: Indonesia’s Mount Semeru has explosively erupted, sending pyroclastic density currents — ‘avalanches’ of extremely hot gas and debris — screaming into several valleys.

Quick thread 🧵 (coming shortly): pic.twitter.com/pUKNcBBdP3

— Dr Robin George Andrews 🌋☄️ (@SquigglyVolcano) December 4, 2022