>> New Orleans? >I don't think New Orleans is a or previously volcanic region No, I meant it was built in the wrong place - below sea level in a region prone to severe flooding, like many inhabited places around the world That said, Yellowstone might get it anyway ;-) --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .