Kawah Gunung Ijen Wall Collapses

A landslide occurred on the crater wall of Mount Ijen, a volcano standing 2,386 meters above sea level in Banyuwangi, Indonesia. The event was recorded during a 24-hour observation period on Tuesday, July 14, 2026.

Nur Hudha, an official at the observation post in Tamansari Village, reported one crater wall landslide with an amplitude of 6 and a tremor duration of 17 seconds. Visually, the volcano appeared clear, though sometimes obscured by clouds. White smoke from the main crater rose approximately 50-100 meters high. Hudha's report on Thursday morning, July 16, 2026, urged caution regarding potential crater wall landslides.

Seismic monitoring also detected two emission earthquakes with amplitudes between 3-6 mm and durations of 19-59 seconds. Three shallow volcanic earthquakes were recorded with amplitudes of 2-5 mm and durations of 7-11 seconds. Additionally, three distant tectonic earthquakes occurred with amplitudes of 2-8 mm, S-P times of 20-38 seconds, and durations of 54-215 seconds. Continuous tremor with an amplitude of 0.5-2 mm was also noted.

Despite the landslide and seismic activity, Mount Ijen's activity level remains at Level I, or normal. Authorities continue to advise the public and visitors against descending to the crater floor or camping within a 500-meter radius of the crater. Awareness of potential CO2 gas flows along the Banyupait-Banyuputih River and toxic gases near the crater is also advised.