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Erosion gullies and white, hydrothermally altered rocks (Polyvotis crater of Nisyros volcano, Greece) (c)
File: nisyros_d23041.jpg | 3306 Hits
--- Image found in Nisyros March 2008: the volcano ... and in: Photo of the Day
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.
Land of Theseus A relaxed walking and study tour to one of Greece's hidden treasures and also one of the least known volcanically active areas in Europe.