Indonesian authorities said Thursday they helped more than 170 climbers who were caught a day earlier by Mount Semeru’s sudden eruption to return to safety as the seismic activity of Java island’s hig...

Semeru volcano — the highest volcano on Java — erupted on the afternoon of November 19, 2025, with pyroclastic flows racing at high speed more than 8.5 kilometers down its slopes, as shown by video fo...

The main flows travelled up to seven kilometres, and a column of ash rose two kilometres into the sky, according to Indonesia's Geology Agency.