Heavy rains triggered flash floods and caused torrents of cold lava and mud to flow down a volcano’s slopes on Indonesia’s Sumatra island, killing at least 37 people and leaving more than a dozen others missing, officials have said.

Monsoon rains and a major mudslide from a cold lava flow on Mount Marapi caused a river to breach its banks and tear through mountainside villages in four districts in West Sumatra province just before midnight on Saturday. The floods swept away people and submerged more than 100 houses and buildings, national disaster management agency spokesperson Abdul Muhari said on Sunday.

Cold lava, also known as lahar, is a mixture of volcanic material and pebbles that flow down a volcano’s slopes in the rain.

Damaged houses are seen after flash floods and cold lava flowed into the village in Tanah Datar district. Photograph: Rezan Soleh/AFP/Getty Images

By Sunday afternoon, rescuers had pulled out 19 bodies in the worst-hit village of Canduang in Agam district and recovered nine other bodies in the neighbouring district of Tanah Datar, the National Search and Rescue Agency, known as Basarnas, said in a statement.

The agency said eight bodies were pulled from mud in Padang Pariaman, and one body was found in the city of Padang Panjang. It said rescuers are searching for 18 people who are reported to be missing.

Rescuers are searching for 18 people reported to be missing. Photograph: INDONESIA DISASTER MITIGATION AGENCY/AFP/Getty Images

Flash floods on Saturday night also caused main roads in Tanah Datar district to be blocked by mud, cutting off access to other cities, local police chief Kartyana Putra said on Sunday.

Videos released by Basarnas showed roads that were transformed into murky brown rivers.

The disaster came just two months after heavy rains triggered flash floods and a landslide in West Sumatra’s Pesisir Selatan and Padang Pariaman districts, killing at least 21 people and leaving five others missing.

The flash floods turned roads into brown rivers. Photograph: Givo Alputra/EPA

Mount Marapi, which stands at 2,885 metres (9,465ft), erupted late last year killing 23 climbers who were caught by surprise. The volcano has been at the third-highest of four alert levels since 2011, indicating above-normal volcanic activity under which climbers and villagers must stay more than 3km (about 2 miles) from the peak, according to Indonesia’s center for volcanology and geological disaster mitigation.

The rains sent mud and volcanic material from Mount Merapi crashing into villages below. Photograph: Givo Alputra/EPA

Marapi is known for sudden eruptions that are difficult to predict because the source is shallow and near the peak, and its eruptions aren’t caused by a deep movement of magma, which sets off tremors that register on seismic monitors.

Marapi has been active since an eruption in January 2023 that caused no casualties. It is among more than 120 active volcanoes in Indonesia. The country is prone to seismic upheaval because of its location on the Pacific “Ring of Fire,” an arc of volcanoes and fault lines encircling the Pacific Basin.



Source link