FTF goes to Rufty
(With thanks to Wikipedia)
The Elham Valley Railway was a railway line connecting Folkestone and Canterbury in East Kent, England. It opened between 1887 and 1889 and closed in 1947. The line was originally proposed by the independent Elham Valley Light Railway Company in the mid-19th century. After the project was cancelled owing to financial difficulties, it was revived by the South Eastern Railway who were competing with the rival London, Chatham and Dover Railway for railway traffic. The scheme was complicated by the imposing geography of the Elham Valley and the construction of two significant tunnels. The southern section from Cheriton to Barham opened in 1887, with the northern section to Canterbury opening two years later. The Elham Valley Railway was never commercially successful as it passed through predominantly rural areas. During the Second World War it was appropriated by the War Department who used it for defence, including a large rail-mounted gun stationed on the line. After the conflict, the line passed back into civilian use, but the damage to the infrastructure was too expensive to repair and the route now had competing bus traffic. A shuttle service from Folkestone to Lyminge was reinstated in 1946, but closed the following year; the remainder of the line never re-opened. Parts of the railway, including Elham railway station were demolished but other parts of the infrastructure including the two tunnels have survived. The history of the line is commemorated in a local museum.
You are looking for a film canister placed near part of the old rails of the railway line that passed down the valley at this location. The rails were lifted and are now being used for something else. BYOP
I will gradually add to this series but if anyone else who lives near other parts of the line wishes to do so please feel free.