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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.
Photos from Italy Italy - the cradle of volcanology. Browse through various photo galleries mainly from its numerous volcanic areas - from Naples to Etna and the Eolian Islands and more.
Tropical rainforest, coconut palm beaches, primitive culture and moon-like landscapes, and some of the world's most active and exciting volcanoes. Join us on our expedition to Vanuatu.