The county is bounded to the north by Ceredigion, to the east by Powys (historic county Brecknockshire), Neath Port Talbot (historic county Glamorgan) and Swansea (also Glamorgan), to the south by the Bristol Channel and to the west by Pembrokeshire. Much of the county is upland and hilly. The Black Mountain range dominates the east of the county, with the lower foothills of the Cambrian Mountains to the north across the valley of the River Towy. The south coast contains many fishing villages and sandy beaches. The highest point (county top) is the minor summit of Fan Foel, height , which is a subsidiary top of the higher mountain of Fan Brycheiniog, height (the higher summit, as its name suggests, is actually across the border in Brecknockshire/Powys). Carmarthenshire is the largest historic county by area in Wales.