Perhaps nothing considered imminently dangerous but they do exist nearby, and fault lines can spread given the right conditions: http://www.esri.com/news/arcwat

Perhaps nothing considered imminently dangerous but they do exist nearby, and fault lines can spread given the right conditions: http://www.esri.com/news/arcwatch/0210/graphics/investigating1-lg.jpg http://www.esri.com/news/arcwatch/0210/graphics/investigatin...