Porth Tyddyn Uchaf (above) lies just south of Anglesey's Church Bay, and is a wide bay of shingle, some patches of coarse sand and low-tide rockpools. The cliffs to the south have some good caves, and the wreck of a vessel (The Annie) can be seen at low tide. Access is along the shore from either of its neighbours. The name translates as 'Upper Homestead Cove'.Porth y Pren (Grid Ref : SH299889) is the next cove to the north, and has a shore of mostly shingle. A walk-through cave is on the south side. Access is a short scramble down the grassy bank which backs it. Its name translates as 'Cove of the Wood'.