One of the main objectives in unraveling the complex development of a continental rift is to set on the structural evolution and magmatism of the rifting system. In this work we present a new geological map of the Northern Main Ethiopian Rift, compiled using data from field work, analysis of aerial photographs, satellite images, topographic maps, and petrographic and geochemical analyses on rock samples. The new data provided an insight on the timing of rift activity and its tectonomagmatic evolution, evidencing a two-stage evolution of deformation and associated magmatic activity from a Pliocene orthogonal extension to a Quaternary oblique one.