Mount Semeru Cold Lava Flood Drops 150 Meters Embankment In Lumajang

A number of residents were desperate to pass during the lava flood that rained on Mount Semeru in Gondoruso Village, Wednesday (5/11/2025). (ANTARA)

Mount Semeru in Lumajang Regency, East Java again vomited cold lava floods on a fairly large scale, Wednesday, November 5 afternoon. The lava flow with a maximum amplitude of 35 millimeters caused the 150-meter embankment to burst, submerge agricultural land and cut off inter-district road access.

This incident occurred in Gondoruso Village, Pasirian District, after the peak area of Semeru was hit by heavy rains with high intensity since noon. The amateur video of residents recording seconds when lava floods hit hard to penetrate the embankment holding the flow on the river side.

As a result of the collapse of the embankment, tens of hectares of residents' rice fields were submerged, and two stall buildings near the river were badly damaged by being swept away by lava material.

As a result of the collapse of the embankment, tens of hectares of residents' rice fields were submerged, and two stall buildings near the river were badly damaged by being swept away by lava material.

"The bun was broken, the water was very heavy. Many residents panicked because the flow went straight to the rice fields and roads," said Suyono, a resident of Gondoruso, Wednesday night.

In addition to submerging the land, lava floods also cut off road access between Pasirian and Candipuro sub-districts, so that a number of residents could not pass.

Many residents are trapped because the road is closed by water. The current is very strong, so it becomes dangerous if forced to pass. So the Pasirian-Tempursari route cannot be accessed," said Devi Efendi, a Gondoruso village apparatus.

This cold lava flood also had time to stop the activities of local residents completely. Residents hope that conditions will recede soon so that access between sub-districts can be reopened.

Meanwhile, officers from the Lumajang BPBD together with village officials began to monitor a number of vulnerable points to ensure that there were no casualties. The local government appealed to the public to remain vigilant and not to move around the river flow that originates at Mount Semeru, because the potential for lava flooding is still high in the midst of extreme weather.