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Anak Krakatau eruptions create new landforms in Sunda Strait

Volcanic activity at Indonesia's Anak Krakatau has generated fresh geological formations, according to recent observations. The findings provide insights into the ongoing geological processes shaping the infamous island.

LSN Thailand · 3 October 2026

Scientists monitoring Anak Krakatau, the active volcano situated in the Sunda Strait between Java and Sumatra, have documented the emergence of new land formations resulting from recent eruptive episodes. The newly formed geological features represent the latest chapter in the volcano's continuous evolution, which has defined the region's landscape for decades.

Anак Krakatau, whose name translates to "child of Krakatau," emerged from the caldera of its legendary parent volcano following the catastrophic 1883 eruption. The younger volcano has remained highly active, with frequent explosive eruptions and periods of lava extrusion reshaping its physical structure.

The identification of these new formations underscores the dynamic nature of volcanic systems in the region and the importance of sustained monitoring efforts. Researchers continue to track changes at the volcano to better understand its behavior and assess potential hazards to nearby populations and maritime activities in the Sunda Strait.

The Sunda Strait remains one of Southeast Asia's most geologically active zones, and observations of Anak Krakatau contribute to broader understanding of volcanic processes across the Indonesian archipelago. Authorities maintain surveillance of the volcano as part of regional seismic and volcanic monitoring protocols.