The Kalka-Shimla toy train then approaches Barog. It was settled in the early 20th century during the building of the narrow gauge Kalka-Shimla Railway. Gradually this town has grown to be a destination in itself. Surrounded by pine forests, it presents a fascinating view of the Churdhar Peak, which poetically translates into 'Mountain of the Silver Bangle'. Town is named after Colonel Barog, an engineer involved in building the railway track in 1903. Barog, the engineer, was responsible for designing a tunnel near the railway station. But ultimately he failed & committed suicide unable to withstand the humiliation. He was buried near the incomplete tunnel. The area came to be known as Barog after him. Later it was constructed by Chief Engineer H.S. Harrington & guided by Bhalku, a local sage in 1903. This 1143.61m tunnel is the longest of the 103 operational tunnels on the route of the Shimla-Kalka Railway. Barog station is immediately after the tunnel. Barog tunnel is the straightest tunnel in the World.