WarmUp answers - cool MOR stuff the pressure is strong enough to crush any man-made vessel like a puny grape between the fingers of Andre the Giant. Before visiting this site I did not know that Iceland is located on a hot spot on a mid- ocean ridge. I thought it was that in a hundred years, only 6m of new crust at mid-ocean ridges forms.
WarmUp answers - cool MOR stuff That it is not all connected as one. I had the idea that it was one long segment, but it is actually broken into segments. I learned that tube worms will frequently colonize on new and old lava.When they do this, they form a base for the "hydrothermal vents" on the lava flow.