A new P-wave velocity model is derived from wide-angle data collected in 1984 and 1986 during the European Geotraverse (EGT) projects EUGENO-S and EUGEMI. The data have been thoroughly reinterpreted and modelled with a travel time inversion algorithm. We have used model grid nodes approximately every 25 km horizontally with a resulting model that is smoother than previously derived models. Despite the lack of fine details in the model we clearly image the thickness of the crystalline crust which varies between 25 and 45 km along the 600-km-long profile. We present the final model together with the velocity parameter resolution which demonstrates more clearly than in previous studies which parts of the model are well constrained by the available data. We interpret the crystalline crust below the sediments of the Rink bing Fyn High and the Norwegian-Danish Basin to be of Sveconorwegian type, a continuation of the Baltic Shield southwest of the Sorgenfrei-Tornquist Zone, a tectonic lineament previously thought of as the boundary between the Precambrian and Palaeozoic Europe. The crust is some 10-15 km thinner here than in the shield proper and in our seismic model we find evidence that the crustal thinning occurs almost entirely in the lower crust (P-wave velocities between 6.5-7.0 km/s). The observed crustal structure shows clear signs of extension, estimated to be at least 20% along the profile.