Volcano Mahameru Eruption in the Southeast Asian nation Prompts Evacuations

The nation's Mount Semeru, the tallest summit on Java island, has erupted, covering multiple communities with falling ash, prompting evacuations and causing officials to elevate the warning to the maximum level.

The volcano in East Java province unleashed searing clouds of fiery ash and a mixture of stone, molten rock, and gases that travelled up to 7km down its sides multiple times from noon to evening, while a thick column of hot clouds rose 2km into the air, according to the nation's geological authority.

The outbursts that unfolded 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 casualties have been announced.

More than 300 inhabitants in the three communities most endangered in the district of Lumajang region were relocated to government shelters, as mentioned by a spokesperson for the national emergency management body.

He stated that increased activity of the mountain on the afternoon of Wednesday led authorities to widen the hazard area to 5 miles from the summit. Residents were urged to stay clear from an area along the Besuk Kobokan River, which is the path of the molten rock stream, as searing gas moved down Semeru’s slopes.

Footage on online platforms displayed a dense cloud of ash sweeping through a wooded ravine to a waterway beneath a bridge. Residents, some with faces covered with ash and rain, fled to makeshift refuges or left for alternative secure locations.

Local media indicated that emergency teams were facing challenges to rescue about 178 people stranded on the 3,676-metre mountain at the Ranu Kumbolo monitoring post. The group comprised 137 climbers, 15 carriers, seven escorts and six travel representatives, according to an official with the protected area.

“They are currently safe at the Ranu Kumbolo station,” an official said in a recorded message. He noted the station was situated 2.8 miles from the crater on the north side of the mountain, which is outside the trajectory of the hot cloud flow that was observed traveling to the south-southeast. Bad weather and rain forced the group to remain overnight there, he added.

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

Semeru’s last major eruption was in December 2021, when 51 people were lost their lives and hundreds others were burned and settlements were buried in thick mud. The eruption led to the evacuation of more than 10,000 residents from their houses.

Indonesia, an island chain of more than 280 million people, is located along the Pacific “ring of fire”, a curved series of fault lines, and is prone to seismic events and volcanic activity.