Stock Photo: Porthor Porth Oer beach, where the sand whistles due to the unique shape of the grains, Llyn Peninsulal Gwynedd, North Wales, Wales, United Kingdom, Europe

Stock Photo: 1890-73734 Porthor Porth Oer beach, where the sand whistles due to the unique shape of the grains, Llyn Peninsulal Gwynedd, North Wales, Wales, United Kingdom, Europe