A UNESCO World Heritage Site
The Kalka Shimla Railway is a a 96-km long, single track working rail link built in the mid-19th century, connecting Kalka in the foothills, to Shimla.
Old photograph of the Barog Station, beside the Barog tunnel
Originally 107 tunnels were built on Kalka Shimla Railway Track and 102 remain in use. The longest tunnel is at Barog.
In 2008, the Kalka-Shimla Railway became part of the World Heritage Site 'Mountain Railways of India'.