the number o f railway zones in india are
Zones and divisions of Indian Railways The 18 zones and the 68 divisions are listed below:[2][3]
Mountain railways of India Three of these railways, Darjeeling Himalayan Railway, Nilgiri Mountain Railway, and Kalka–Shimla Railway have been collectively designated as a UNESCO World Heritage Site, also named as "Mountain Railways of India", while the fourth railway, Matheran Hill Railway is in tentative list of UNESCO World Heritage Site.[1] These all are narrow-gauge railways. The Nilgiri Mountain Railway is also, the only rack railway in India.