Archaeologists uncovered a relic of the 20th-century conflict beneath Scarborough Castle, decades after the bunker was sealed and its exact location was forgotten Archaeologists uncovered a Cold War bunker underneath an English castle. English Heritage Scarborough Castle in North Yorkshire, England, hides an unexpected piece of history. Its grounds contain a nuclear bunker added centuries after the original structure was built. Overlooked for decades, the Cold War-era site was unearthed last month by archaeologists with English Heritage , a charity that manages historic sites in the country. The newly discovered bunker was one of roughly 1,500 underground observation posts set up across Great Britain at the peak of the Cold War. The United Kingdom Warning and Monitoring Organization (UKWMO) established the sites to provide protection to Royal Observer Corps (ROC) volunteers tasked with recording explosions in and around the country in the case of a nuclear bomb attack.…