An aerial view of damaged houses at an area affected by the eruption of Mount Semeru volcano in Curah Kobokan, Pronojiwo district, Lumajang, December 8, 2021. Drone footage taken on Wednesday (December 8) captured an Indonesian village and its surrounding areas, affected by the recent eruptions of Mount Semeru, covered in mud and ash. REUTERS/Willy Kurniawan

An aerial view of a damaged area affected by the eruption of Mount Semeru volcano in Curah Kobokan, Pronojiwo district, Lumajang, December 8, 2021. Local residents of Curah Kobokan, one of the areas worst-hit by the eruptions, were also seen retrieving items from houses with collapsed roofs, as search and rescue teams operated in the vicinity. REUTERS/Willy Kurniawan

An aerial view of a damaged area affected by the eruption of Mount Semeru volcano in Curah Kobokan, Pronojiwo district, Lumajang, December 8, 2021. Semeru, the tallest mountain on the island of Java, had erupted dramatically on Saturday (December 4), before erupting again on Monday (December 6). REUTERS/Willy Kurniawan

A damaged building is seen in an area affected by the eruption of Mount Semeru volcano in Candipuro district, Lumajang, December 7, 2021. Picture taken with a drone. REUTERS/Willy Kurniawan

Submerged houses are seen in an area affected by the eruption of Mount Semeru volcano in Candipuro district, Lumajang, December 7, 2021. Picture taken with a drone. REUTERS/Willy Kurniawan

Houses covered with ash are seen in an area affected by the eruption of Mount Semeru volcano in Candipuro district, Lumajang, December 7, 2021. Picture taken with a drone. REUTERS/Willy Kurniawan