Mount Merapi, Indonesia

Mount Merapi, located in Indonesia's densely populated Java Island, is one of the country's most active and dangerous volcanoes. In 2020 and 2021, Merapi experienced multiple eruptions, known for their deadly pyroclastic flows—swift-moving clouds of superheated gas and rock fragments that can devastate anything in their path.

These eruptions necessitated frequent evacuations of nearby communities to ensure public safety. Merapi's ongoing activity underscores the constant threat posed by volcanoes in Indonesia, which sits on the Pacific Ring of Fire—a volatile region prone to seismic and volcanic events.