Volcano Mahameru Outburst in Indonesia Triggers Evacuations

The nation's Mount Semeru, the highest peak on Java island, has erupted, blanketing several villages with volcanic ash, prompting evacuations and causing officials to elevate the alert to the highest level.

The mountain in the province of East Java released blistering plumes of fiery ash and a mixture of rock, lava and gas that travelled up to 4 miles down its slopes several times from midday to dusk, while a dense plume of fiery clouds rose 1.2 miles into the air, as stated by the nation's geological authority.

The eruptions that occurred throughout the day compelled officials to raise the mountain's warning status twice, from the third-highest level to the top level, the agency said. No deaths or injuries have been reported.

More than 300 inhabitants in the three villages most at risk in the area of Lumajang region were evacuated to government shelters, as mentioned by a spokesperson for the national disaster mitigation agency.

He said that increased activity of the mountain on Wednesday afternoon led officials to widen the hazard area to 5 miles from the summit. People were advised to keep away from an area along the Besuk Kobokan River, which is the path of the lava flow, as searing gas moved down the volcano's sides.

Videos on online platforms showed a thick plume of volcanic dust moving through a wooded ravine to a waterway beneath a overpass. Residents, some with faces covered with ash and rain, fled to makeshift refuges or left for alternative secure locations.

Local media reported that emergency teams were struggling to rescue about 178 people trapped on the 12,060-foot mountain at the Ranu Kumbolo observation station. The group comprised 137 hikers, 15 carriers, seven escorts and six travel representatives, according to an spokesperson with the protected area.

“They remain secure at the Ranu Kumbolo station,” a spokesperson stated in a video statement. He said the station was located 2.8 miles from the crater on the northern slope of the mountain, which is not in the path of the hot cloud flow that was seen moving to the southeast direction. Bad weather and precipitation forced the group to spend the night there, he added.

The volcano, also known as Mahameru, has burst many occasions in the last two centuries. However, as is the case with numerous of the 129 active volcanoes in Indonesia, thousands of people still to reside on its productive highlands.

The mountain's last major eruption was in December 2021, when 51 people were lost their lives and hundreds more were injured and settlements were submerged in layers of mud. The eruption forced the relocation of more than 10,000 residents from their homes.

The country, an archipelago of more than 280 million people, sits along the Pacific “ring of fire”, a horseshoe-shaped series of tectonic boundaries, and is susceptible to seismic events and volcanism.