The Montseny Biosphere Reserve is one of the Pyrenees ...
Submarine volcanoes are underwater vents or fissures in the ...
A volcano is an opening, or rupture, in the surface or ...
A pyroclastic flow (also known scientifically as a ...
A black smoker or sea vent is a type of hydrothermal vent ...
On 11 April 2012 an undersea earthquake struck near the ...
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