Mount Mahameru Eruption in the Southeast Asian nation Triggers Evacuations
The nation's Semeru volcano, the tallest summit on Java island, has exploded, blanketing several villages with falling ash, leading to evacuations and leading authorities to raise the alert to the maximum level.
The mountain in the province of East Java unleashed searing clouds of hot ash and a combination of stone, molten rock, and gases that moved up to 4 miles down its sides multiple times from midday to dusk, while a dense plume of hot clouds rose 1.2 miles into the sky, as stated by Indonesia’s Geology Agency.
The outbursts that unfolded throughout the day compelled authorities to raise the mountain's warning status twice, from the third-highest level to the highest, the agency said. No deaths or injuries have been reported.
More than 300 residents in the three communities most at risk in the district of Lumajang were evacuated to government shelters, according to a spokesperson for the national disaster mitigation agency.
He said that increased activity of the volcano on the afternoon of Wednesday prompted authorities to expand the hazard area to 5 miles from the summit. Residents were urged to keep away from an zone along the Besuk Kobokan River, which is the route of the molten rock stream, as searing gas flowed down the volcano's sides.
Videos on social media showed a thick plume of volcanic dust sweeping through a wooded ravine to a river beneath a bridge. Locals, some with faces smeared with ash and water, escaped to temporary shelters or departed for other safe areas.
Local media indicated that authorities were facing challenges to rescue about 178 people trapped on the 12,060-foot peak at the Ranu Kumbolo observation station. The group comprised 137 hikers, 15 carriers, seven escorts and six tourism officials, according to an official with the protected area.
“They remain secure at Ranu Kumbolo monitoring post,” an official said in a video statement. He noted the station was situated 2.8 miles from the crater on the north side of the volcano, which is outside the trajectory of the fiery cloud movement that was seen moving to the south-southeast. Inclement conditions and precipitation forced the team to spend the night there, he explained.
Semeru, also called Great Mountain, has erupted many occasions in the last two centuries. However, as is the case with many of the 129 active volcanoes in the archipelago, tens of thousands of residents continue to live on its productive highlands.
The mountain's previous significant explosion was in December 2021, when 51 people were lost their lives and hundreds more were injured and villages were submerged in thick mud. The eruption led to the evacuation of over ten thousand people from their houses.
The country, an archipelago of over 280 million people, sits along the Pacific “ring of fire”, a curved series of fault lines, and is prone to seismic events and volcanism.