29 eruptions in 1 week! Java's tallest volcano in fury! Swipe →
Avalanches at 700 km/h and 1,000°C descending the slopes!
Indonesia has 127 active volcanoes — more than any country!
80,000 people in the danger zone. Ash covers entire villages!
Seismographs, satellites, and cameras watch Semeru non-stop!
Science, timeline and human impact!