The magma plume underneath Iceland is bigger than Iceland, the entire nation is very temporary, it will be transformed, not through man made explosions, but by the big boss of all. The quakes are from the magma moving the crust, like sticking a hose in the ground, it is happening all the time. Fascinating to observe. All that free thermal energy is coming for the heating bill. It could happen at any time, but it will not be like St Helens in the US, more like a constant break through, still very destructive, making the land there unusable. There are 3D maps of the magma plume that can give you an idea of what is happening. I was watching on and off all weekend. It is being described by some as ending up a tourist event, uninhabitable but an enormous area of volcanic activity for people to come and see.