Abstract: This paper proposes an alternative route for the southern branch of the NorthAnatolian Fault Zone (NAFZ)using evidence from morphotectonic features, seismology, GPS and recently published Magnetotelluricand Transient Electromagnetic (MT) data. In this new route, the southern branch connects with the mainbranch of the NAFZ in Bolu via the Gölpazarı pull-apart basin and Mudurnu. The slip distribution of theNAFZ as taken from GPS data indicates that the newly hypothesized route is the second most importantbranch of the NAFZ.