This is a picture from the Cretacic crest from Patones, near Madrid. It was formed when Mediterranean Sea (Called Tethis Sea during Cretacic Era)reached the center of Iberian peninsula

This is a picture from the Cretacic crest from Patones, near Madrid. It was formed when Mediterranean Sea (Called Tethis Sea during Cretacic Era)reached the center of Iberian peninsula