 In 2001, a team of archaeological researchers from the University of the Basque Country conducted archaeological excavations in the basement of the Cathedral of Santa Maria and the remains of the foundations of the old wall were discovered.After analyzing the remains it was found that the foundations correspond to the first wall that surrounded the town but were older than the founding of the city.This would denote a certain economic power and social leadership, unknown to this day who could be your drivers or they defended using many resources for this.