We have had several cascade earthquakes of signififcant strength in recent years in the Volcanic Eiffel region over here, their frequency is quite high and growing still, and to geologists it is clear that it is magmatic activity deep underground. The depth is the reason why on the surface is only felt little of it, but it also means the threat potential is quite high. Somethign is loading up down there. There is growing concern that a major eruption could take place again anytime in the next 30-300 years, but nobody wants to care for it, nobody wants to pay attention to it. Since the whole Eiffel region is one giant volcano, that pretty much could mean game over for Germany as an integrated state and economic actor.
THAT are concerns, dear
Brits...! 
