The main goals of the project SO231-PAGE4 were an improved understanding of Gondwana break-up and to analyze timing, structures and kinematics of ancient to modern Extension along the East African continental margin. During the cruise SO231 from 20th February 2014 (Durban) to 29th March 2014 (Durban), a total of 4300 km of geophysical profiles has been acquired. The processed (migrated) profiles are available in SEG-Y Format.