Mount Semeru Eruption in Indonesia Triggers Evacuations

The nation's Semeru volcano, the highest peak on Java island, has erupted, covering multiple communities with volcanic ash, prompting evacuations and causing officials to elevate the warning to the maximum level.

The mountain in East Java province released blistering plumes of hot ash and a mixture of stone, molten rock, and gases that travelled up to 4 miles down its sides several times from noon to dusk, while a thick column of fiery clouds rose 2km into the sky, according to the nation's geological authority.

The outbursts that unfolded throughout the day compelled officials to increase the mountain's warning status twice, from the level three to the top level, the authority reported. No deaths or injuries have been announced.

Over three hundred inhabitants in the three communities most endangered in the district of Lumajang region were evacuated to official safe havens, as mentioned by a spokesperson for the national emergency management body.

He said that increased activity of the mountain on the afternoon of Wednesday led officials to widen the danger zone to 8km from the crater. Residents were advised to keep away from an zone along the Kobokan River, which is the path of the lava flow, as searing gas flowed down the volcano's sides.

Videos on online platforms displayed a dense cloud of volcanic dust sweeping through a forested valley to a river beneath a overpass. Residents, some with faces covered with ash and rain, escaped to makeshift refuges or left for other safe areas.

Local media reported that authorities were struggling to rescue about 178 people stranded on the 12,060-foot peak at the Ranu Kumbolo observation station. The party included 137 hikers, 15 carriers, seven guides and six travel representatives, according to an spokesperson with the national park.

“They remain secure at Ranu Kumbolo monitoring post,” an official stated in a recorded message. He said the post was located 2.8 miles from the crater on the north side of the mountain, which is not in the path of the hot cloud flow that was seen moving to the south-southeast. Bad weather and precipitation forced the group to remain overnight there, he added.

The volcano, also called Great Mountain, has erupted numerous times in the last two centuries. Still, as is the case with many of the 129 live volcanoes in the archipelago, thousands of people still to reside on its fertile slopes.

The mountain's previous significant explosion was in late 2021, when 51 people were killed and several hundred more were burned and settlements were buried in thick mud. The eruption forced the relocation of more than 10,000 residents from their homes.

Indonesia, an archipelago of more than 280 million people, sits along the Pacific seismic belt, a horseshoe-shaped series of fault lines, and is prone to earthquakes and volcanic activity.