Pyroclastic flow rolls down the slope of Mount Semeru during an eruption on Sunday, Dec. 4, 2022 in Lumajang, East java, Indonesia. Indonesia’s highest volcano on the country’s most densely populated island of Java erupted Sunday.,Image: 742190810, License: Rights-managed, Restrictions: This content is intended for editorial use only. For other uses, additional clearances may be required., Model Release: no

Mount Semeru spews thick ashes in Lumajang on December 4, 2022.,Image: 742200723, License: Rights-managed, Restrictions: , Model Release: no

epa10347574 A handout photo made available by the Indonesian National Board for Disaster Management (BNPB) shows volcanic materials from Mount Semeru rising in the sky in Lumajang, East Java, Indonesia, 04 December 2022. Authorities has raised Mount Semeru alert status to the highest level following its eruption early on 04 December 2022. The 3,376-metre Semeru is one of the most active volcanoes on Java island. EPA-EFE/BNPB / HANDOUT HANDOUT EDITORIAL USE ONLY/NO SALES