Local people gather at an evacuation center as a result of Mount Semeru eruption, at Sumberwuluh village in Lumajang regency, Indonesia December 4, 2021. The volcano threw up towers of ash and hot clouds on Saturday that blanketed nearby villages and sent residents fleeing in panic. Instagram ACT (Aksi Cepat Tanggap) & MRI (Masyarakat Relawan Indonesia) via REUTERS

An Indonesian soldier walks past damage trucks at Sumberwuluh village following the eruption of Semeru mount volcano in Lumajang regency, East Java province, Indonesia, December 5, 2021. Drone footage on Sunday (December 5) showed an Indonesia town almost buried in volcanic ash after Mount Semeru erupted in East Java. REUTERS/Willy Kurniawan

A dead animal is seen at the Sumberwuluh village following the eruption of Semeru mount volcano in Lumajang regency, East Java province, Indonesia, December 5, 2021. A BNPB official said around 1,300 people have been evacuated, while nine people remain unaccounted for. REUTERS/Willy Kurniawan

An Indonesian soldier walks past damage trucks at Sumberwuluh village following the eruption of Semeru mount volcano in Lumajang regency, East Java province, Indonesia, December 5, 2021. REUTERS/Willy Kurniawan

People ride motorbikes down a road covered with volcanic ash at Sumberwuluh village, following the eruption of Mount Semeru volcano in Lumajang regency, East Java province, Indonesia, December 5, 2021. REUTERS/Willy Kurniawan