Heritage Gateway - ResultsHob Uid: 1457365 Location : County DurhamHawthorn Grid Ref : NZ4175346868 Summary : The site of Cold Hesledon centimetric early warning radar station. It was built in the early 1950s as part of the Rotor programme to modernise the United Kingdom's radar https://www.heritagegateway.org.uk/Gateway/Results_Single.aspx?uid=1457365&resourceID=19191