Hell ,Manhattan Ilsand, that other solid rock , has a substantial crack awaiting it's turn . Was always wondering how much the collapse of the Twin towers either exaccerbated it and/or relieved the pressure of the weight concentration.Meanwhile it's highest time for a good 6.5 shake in the Middle East somewhere.
Further I'm writing off *ever* taking the ride in the St Louis, Missouri Arch; that Aero Sarrinen "Gateway to the West". Murphy's Law informs me that the day I go the New Madras fault will "shrug"_ Atlas-style.
Makes me think that there must be a website "map" of all of the world's faultlines and history of activity. Meanwhile the U.S.Geological survey is not 15 mins away in Reston,Virginia.
Wonder if they sell faultine maps maps ;-)