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Divergent plate boundaries in oceans Two ocean plates move apart from each other. Hot upwelling mantle material forms magmas that continuously produce new oceanic crust. An ocean widens.
Vanuatu Volcano Tours One of the most exciting volcano travel destinations in the world! On our adventurous expeditions, you will get close to active lava lakes on Ambrym Island and the spectacular fireworks of Yasur volcano on Tanna Island.
Private tours on Etna volcano Discover Europe's largest active volcano on private, guided 1-day tours. Tours can be customized for different interests and fitness levels.