Researchers identify Cold War radar system on Suffolk coast

Researchers from the International Research Group Orford Ness (IRGON) identified a mysterious concrete ring on the Suffolk coast in England as part of a Cold War radar system.

The 50m diameter concrete base formerly supported a steerable helical transmitter and rows of receivers. This technology allowed the US Air Force to detect rocket launches and nuclear explosions from thousands of miles away during the 1960s.

The IRGON team used technical drawings and declassified files to link the site to the R-System. They traveled to the USA to find similar structures in New Mexico and Maryland, where local residents were also unaware of the original purpose of the rings. The team also interviewed Edwin Lyon, the 94-year-old chief designer of the system. Lyon confirmed the existence of the technology and provided historical records after receiving security clearance.

Only eight of these radar systems were ever built globally before they were replaced by satellites. The site is currently a nature reserve managed by the National Trust.