This natural arch was collected by the author during a 10 days hiking trip along Costa Cantabria between the town of Ribadescella and the village of Celorio in september 2014. On this gallery, the arches are shows from east to west. This beautiful opening is located on Tuzarrizu locallity and had an estimated height of 12 meters. It results from a combinaison of a very old sinkhole and a sea cave. One of a great example of the numerous opening which occurs in this area.