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Global Volcanism Program | Image GVP-00563

Steam rises from a fissure cutting the summit cone of Anak Krakatau in 1979.  Broad areas of hydrothermal alteration color the crater walls.  Frequent explosive activity since 1927, sometimes accompanied by lava flows, has constructed an island 2 km in diameter, with a height of about 300 m. Copyrighted photo by Katia and Maurice Krafft, 1971.

Steam rises from a fissure cutting the summit cone of Anak Krakatau in 1979. Broad areas of hydrothermal alteration color the crater walls. Frequent explosive activity since 1927, sometimes accompanied by lava flows, has constructed an island 2 km in diameter, with a height of about 300 m.

Copyrighted photo by Katia and Maurice Krafft, 1971.


Krakatau