 From Saddle Point on the western side, round to Castle Point on the eastern headland, the geology has legal protection because of its notable Ordovician Pillow Larva, in which the Llanvirn series is well demonstrated.Many of the rocks of Pembrokeshire have their origins some 460 million years ago in vast volcanic outpourings of ash and Tuff, and more rarely flows of larva, which, as here, cooled into a number of pillow formations.Although the Pembrokeshire Coast National Park includes almost all of the coastline, it has three gaps, of which one is Fishguard and Goodwick.