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Three Volcanoes
Mount Semeru, seen with an ash plume, is the highest volcano on the Indonesian island of Java and has been in a constant eruption since 1967. It lies at the southern end of the Tengger caldera, which contains smaller volcanoes Mount Bromo and Mount Batok (both seen in the foreground), and several others.
Photograph by John Stanmeyer, National Geographic

Volcanoes

See photos of volcanoes and download free volcano desktop wallpapers from National Geographic.