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Mynydd Drumau is a mountain in south Wales lying on the border between Swansea and the county of Neath Port Talbot. It is 272m / 892ft high, and is a Marilyn. The mountain is situated in a suburban and rural upland zone and is dotted with a number of farms and woodlands. It is a UK listed Marilyn.

Moel Darran 229m is a trig pointed peak in Dyffryn Clydach, Neath Port Talbot, Wales at grid reference SS723982.

Mynydd y Betws is a mountain or large hill located on the border between Swansea and Carmarthenshire in South Wales, between Ammanford and Clydach. It is an area of upland with large stretches of tussocky grassland. The medieval castle of Penlle'r Castell is located near the highest point and the Mynydd y Betws Wind Farm is prominent with fifteen 110 m (361 ft) wind turbines. It is a UK listed Marilyn. Penlle'r Castell - Visible at this site are a series of impressive earthworks with deep ditches and some fragments of the stone buildings that must have topped them. It may have had two stone towers, probably made of dry stone walls because there are no signs of any mortar having been used. It may not have been permanently manned.

Mynydd Marchywel is a 417-metre-high hill in the Neath Port Talbot area in South Wales. Its summit is marked both by a cairn and a trig point. The larger part of the hill is cloaked in modern forestry through which numerous streams fall away westward to the River Tawe, eastward to the River Dulais and southward into the Clydach, the latter two being tributaries of the River Neath. It is a UK listed Marilyn.