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Global Volcanism Program | Image GVP-05826

This classic breadcrust bomb was one of many large volcanic bombs ejected during the September 1980 eruption of Gamalama volcano.  Ejected bombs and blocks covered a broad area up to about 1 km from the summit vent, primarily in northern and western directions.  The largest ejected block was about 6 m in diameter.  The western coast of Halmahera Island is visible in the distance. Photo by Jack Lockwood, 1980 (U.S. Geological Survey).

This classic breadcrust bomb was one of many large volcanic bombs ejected during the September 1980 eruption of Gamalama volcano. Ejected bombs and blocks covered a broad area up to about 1 km from the summit vent, primarily in northern and western directions. The largest ejected block was about 6 m in diameter. The western coast of Halmahera Island is visible in the distance.

Photo by Jack Lockwood, 1980 (U.S. Geological Survey).

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Gamalama