The core of this book is based on the unique cooperation between earth scientists and civil engineers working in the field of strong earthquakes in the Vrancea region of Rumania and the capital city Bucharest. It goes on to review the results of deep seismic tomography from mantel pumes, deep lithospehric properties from Russian nuclear explosion data and high -resolution imaging in seismics. Finally, the third part of this book focusses on the effect of tectonics on plate motions and civilisation.