Barog is a small hill station in Solan district in the Indian state of Himachal Pradesh. The station lies on UNESCO World Heritage Site Kalka–Shimla Railway. Set in the mountains Barog is just 60 km from Chandigarh on the Kalka-Shimla highway. Barog was settled in the early 20th century during the building of the narrow gauge Kalka-Shimla Railway. Currently many residents have their long stays in their houses and flats in Barog. Mostly they are Sikhs from Punjab. It used to be an important stop in the early decades of the century when the Kalka-Shimla toy train stopped here for an hour while the sahibs and memsahibs enjoyed a lavish lunch. Barog tunnel is the longest of the 103 operational tunnels on the route of the Shimla-Kalka Railway, which is 1143.61m long. Barog station is immediately after the tunnel. Barog tunnel is the straightest tunnel in the World. Trains take about 2.5 minutes to cross this tunnel, running at 25 kilometres per hour.