Cil Ifor Top hill fort Llanrhidian from the air
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aerial photograph of Cil Ifor Top promontory fort on the Gower Peninsula, South Wales. Cil Ifor Top is a type of hill fort known as a promontory fort consisting of a multivallate hill top enclosure dating from the Iron Age (800 BC Ð AD 100). There is a small ringwork at the south east end approximately 35m in diameter which is thought to date from the medieval period.