Abstract
A synthesis of the results and conclusions from the data corresponding to the ESCI-N project is presented. The ESCI-N project developed in the early 90’s providing the first set of deep reflection and refraction data for the Cantabrian Mountains and adjacent areas. The discovery of a crustal root beneath the highest picks of the Cordillera marked a hit point on the studies and the relationship between the Cantabrian Cordillera and the Pyrenees became clear after the ESCI-N project. The study and interpretation of these data produced important findings and new constraints greatly improving the geodynamical and evolutional models of the area.
