Llanmelin Wood Iron Age hillfort has numerous banks and ditches and is located in a highly defensible position. The Iron Age in Wales dates approximately from c. 800 BC and the beginning of the Roman conquest of Wales in AD 74. It is thought the hillfort was occupied by the Celtic Silures people, who lived in what is now south east Wales. The site is north of Caerwent, Monmouthshire, Wales (Welsh: Caer-went, Sir Fynwy, Cymru)) off the A48 on a minor road where the site is reached by track and then footpath.