Castlemartin, Pembrokeshire Castlemartin, Pembrokeshire Castlemartin () is a village in (and giving its name to) the Castlemartin Hundred, Pembrokeshire, Wales. It is part of the community of Stackpole and Castlemartin, after amalgamating with Stackpole in 2012, within the Pembrokeshire Coast National Park. The village is on a sandstone ridge, southwest of Pembroke, southeast of Angle, and reached on the B4319 road. In chronostratigraphy, the British sub-stage of the Carboniferous period, the 'Arundian' derives its name from Hobbyhorse Bay in the Castlemartin community"arundo" being the Latin for hobby horse. The village, once centred on a prominent Norman motte-and-bailey castle, together with the original
Pembrokeshire Pembrokeshire from the border with Carmarthenshire westwards to Haverfordwest, then northwards to Fishguard. Some improvements have been made since the 1990s but others were still the subject of discussion in 2014. The A477 from St. Clears to Pembroke Dock is long, of which only are dual carriageway. The Cleddau Bridge carries the A477, connecting South Pembrokeshire with North Pembrokeshire, across the Cleddau Estuary. The A478 traverses eastern Pembrokeshire from Tenby in the south to Cardigan, Ceredigion in the north, a distance of . The A487 is the other major route, running northwest from Haverfordwest to St David's, then northeast following