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One of the world's most famous volcanoes looming over the City of Naples
Latest VAAC alerts
: The Volcanic Ash Advisory Centers provide near-real time global monitoring of volcanic ash plumes for aviation. Read the latest (or browse past) advisories.
Introduction to Plate Tectonics
: The Earth's upper, rigid layer is broken into several plates which are in constant motion to one another. Most earthquakes and volcanoes occur as result of these plate boundaries.