A Royal Observer Corps underground monitoring post located near Weybourne, Norfolk, United Kingdom. This Cold War-era bunker was part of a nationwide network of observation posts designed to monitor nuclear fallout and provide early warning of potential attacks during the height of the Cold War. The ROC network operated from the 1950s until 1991, with volunteers stationed in these underground bunkers to detect and report on nuclear detonations and radioactive fallout across the UK.
Many of these structures remain intact today, though most are now privately owned and require permission for access.