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Mount Lewotobi Laki-Laki Erupts, Sends 18-Kilometre Ash Plume

The agency cautioned that rainfall could trigger lahar floods threatening riverside communities

​Indonesia’s Mount Lewotobi Laki-Laki erupted on Monday, releasing an ash cloud that soared approximately 18km into the sky. ​
Mount Lewotobi Laki-laki spewed an ash tower 18 km high in a fresh eruption
The eruption of Indonesia’s Mount Lewotobi Laki Laki on Monday, July 7, 2025.

Overview

  • Mount Lewotobi Laki-Laki, a 1,584-metre twin-peaked volcano on Flores Island, erupted at 11:05 am local time, sending an ash column 18 kilometres into the sky.
  • The volcanology agency reported no immediate casualties or damage from the eruption.
  • Authorities cautioned that heavy rains could trigger hazardous lahar flows along rivers below the volcano.
  • Unlike last month’s eruption, which grounded dozens of flights to and from Bali, no cancellations were reported after Monday’s event.
  • The volcano sits within Indonesia’s seismically active Ring of Fire as part of a twin system paired with the 1,703-metre Perempuan peak.