Where crustal plates collide: The San Andreas Fault (infrared photograph) runs through much of California. As the western plate, on the right, grinds north, earthquakes rock the land.

Photograph by James P. Blair, National Geographic

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Ring of Fire
Ring of Fire Encyclopedic Entry

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4 - 12 and up

Geography, Science

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The Ring of Fire is a string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean.