 Roman rule in Wales was a military occupation, except for the southern coastal region of South Wales east of the Gower Peninsula, where there is a legacy of Romanisation, and some southern sites such as Carmarthen.The only town in Wales founded by the Romans, Caerwent, is located in South Wales.Wales was a rich source of mineral wealth, and the Romans used their engineering technology to extract large amounts of gold, copper, and lead, as well as modest amounts of some other metals such as zinc and silver.