Sinabungs Renewed Ash Mount Sinabung erupts, spewing volcanic ash, as seen from Simpang Empat District, Karo Regency, North Sumatra, Indonesia, on September 1, 2026. Local residents wear masks as a precaution against airborne volcanic ash following renewed eruptive activity on August 30, 2026. The volcano had been dormant for 400 years before entering a prolonged eruption period from 2010 until activity subsided in 2021. Karo, North Sumatra Indonesia