A well-preserved former Royal Observer Corps underground observation post is located off Washway Road, Holbeach. The posts were built during the Cold War, as part of a national system to provide civil and military authorities with essential information in the event of a nuclear attack. The posts were equipped with a variety of scientific and meteorological instruments, with their primary function being to monitor and record the position and strength of any nearby nuclear strikes, and the subsequent passage of radioactive fallout in the area. This information would be passed to regional and national headquarters of the United Kingdom Warning and Monitoring Organisation, assisting and informing the national authorities to co-ordinate any appropriate responses. This particular post is believed to have been opened in 1964. Access was through a 2ft square hatch on the surface, where an associated air vent can also be seen. All surface features are intact with a little flaking of the light green paint. A ladder would lead down the concrete shaft to two rooms; the first being quite small and used to house the chemical toilet. The second, much larger monitoring room measured approximately 15' by 7'6'', and would have been staffed by three observers. Internally the post is in excellent condition with much of the equipment remaining. The post remained in use until 1991, when it was closed and locked. The post was gifted to the Heritage Trust of Lincolnshire in 2000, who now manage the site and its preservation. The post is occasionally opened for public access. {1}{2}{3}{4}{5}