Mount Semeru, the highest mountain on Java Island located on the border of Lumajang and Malang Regencies, showed significant volcanic activity again on Monday (22/6/2026) morning. Official reports show an eruption occurred with an ash column reaching 1,000 meters above the peak.
This volcanic activity has been observed since the morning, with volcanic material forcefully ejected into the atmosphere. This eruption serves as a warning for communities around the mountain slopes to remain vigilant against potential secondary impacts of the eruption.
As of this reporting, authorities continue to conduct intensive monitoring of the volcano's seismic activity. The public is urged to comply with instructions from the Center for Volcanology and Geological Hazard Mitigation (PVMBG) and stay away from designated danger zones for their collective safety.
