Marchwood ROC Post

The Marchwood ROC Post was a Royal Observer Corps nuclear monitoring post located near Marchwood, United Kingdom. It formed part of the UK's Cold War-era ground-based nuclear fallout detection and warning network, operated by the Royal Observer Corps from its establishment until the corps' disestablishment in 1995. These posts were typically small, underground structures designed to monitor nuclear explosions and fallout in the event of a nuclear attack.