During the Second World War a Chain Home RADAR Establishment was built on land at Alltlwyd and Maesfron farms between Llanrhystud and Llanon, where a number of bunkers were built on the site and a small camp at Llanon for those employed at the station. The Radar system would monitor aircraft approaching Britain.
What are your memories of the Chain Home Radar system in Llanrhystud?
Castell Mawr Chain Home High Radar site was one of a network of coastal early warning stations built by the Royal Air Force, before and during the early years of the Second World War to detect and track enemy aircraft and provide an early warning capability. 6 bunkers were constructed along the foot of the coastal slope between Maesfron and Plas Allt-Lwyd houses in the south-west to Allt-lwyd-fach farm in the north-east, below Castell Mawr hillfort.
Site details: http://www.coflein.gov.uk/en/site/421679/details/castell-mawr-llanrhystud-chain-home-radar-site