Arfordir is a pan-Wales project funded through grant-aid to the Welsh Archaeological Trusts administered by Cadw. In South Wales it has been designed to monitor the condition and the impact of erosion on archaeological sites in the coastal zone. The study area for the third year (2012-13) includes the stretch of coastline from Ogmore-by-Sea to Penarth. This stretch contains a plethora of archaeological sites from prehistoric round barrows and a number of important hillforts and promontory forts to significant Second World War defences.