Dyrhólaey Beach viewed from Dyrhólaey viewpoint looking at NW direction. Pétursey, a flat top tuya mountain can be seen at the upper right hand corner. Tuyas are formed by eruptions beneath thick ice sheets during the Ice Age. They can be recognized by their steep sides and flat tops. You can also see another example in my Antarctica gallery at https://pbase.com/wailee6/image/175101644