Ynys Cantwr

Ynys Cantwr is a small tidal island south of Ramsey Island, Pembrokeshire, Wales. Its highest point is 55 metres.

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Pembrokeshire

Principal settlements	Cilgerran Fishguard Goodwick Haverfordwest Milford Haven Narberth Newport Neyland Pembroke Pembroke Dock St Davids Templeton Tenby

Towns and villages	Ambleston Amroth Angle Boncath Brawdy Burton Camrose Carew Castlemartin Clydau Clynderwen Cosheston Crymych Cwm Gwaun Dale Dinas Cross East Williamston Eglwyswrw Fishguard Freystrop Haverfordwest Hayscastle Herbrandston Hook Hundleton Jeffreyston Johnston Kilgetty/Begelly Lampeter Velfrey Lamphey Letterston Llanddewi Velfrey Llandissilio West Llangwm Llanrhian Llanstadwell Llawhaden Lydstep Haven Maenclochog Manorbier Manordeifi Marloes and St. Brides Martletwy Mathry Merlin's Bridge Milford Haven Mynachlog-ddu Narberth Nevern New Moat Neyland Nolton and Roch Pembroke Pembroke Dock Penally Porthgain Puncheston Rosemarket Rudbaxton Saundersfoot Scleddau Slebech Solva Spittal St Davids and the Cathedral Close St. Dogmaels St. Florence St. Ishmael's St. Mary Out Liberty Stackpole Stepaside Strumble Head Tenby The Havens Tiers Cross Trecwn Trefasser Uzmaston and Boulston Walwyn's Castle Wisemans Bridge Wiston Wolfscastle

Castles	Carew Castle Cilgerran Castle Cresswell Castle Dale Castle Haverfordwest Castle Llawhaden Castle Manorbier Castle Narberth Castle Pembroke Castle Picton Castle Wiston Castle

Islands	Bishops and Clerks Caldey Island Crow Rock Dinas Island Emsger Gateholm Grassholm Llechau-isaf Meini Duon Middleholm Ramsey Island St Catherine's Island Skokholm Skomer St Margaret's Island Strumble Head Trwynmynachdy Ynys Bery Ynys Cantwr Ynys Eilun Ynys Gwelltog

Rivers	Afon Cych River Gwaun Western Cleddau Eastern Cleddau River Cleddau Afon Nyfer Pembroke River Afon Teifi