It was suggested that the fault has given rise to unusual earthquakes, posing a threat and potential hazard to people living in the region.
According to new research, at least six earthquakes registering above a seven on the Richter magnitude scale have struck the Spanish fault in recent history.
[1] During the 2011 earthquake in Santiago, the collapse of the Church resulted in the complete destruction of domes, roofs and vaults.
The building had undergone previous reconstruction efforts prior to the 2011 earthquake, including the addition of a compression layer of a mesh-reinforced concrete that increased it's mass.
It is suggested that this kind of intervention increased the damages to the walls and caused the roof to collapse.