why railway tracks should not construct on hilly areas
Answers
Railway tracks should not be constructed in hilly areas because in the hilly areas there is snowfall which can block the railway lines too.
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The mountain railways emerged as a result of delayed interest evinced during British Raj for establishing control over the Himalayas and other mountain ranges of India. Development of the Hill Passenger Railway: - Tramway between Siliguri and Darjeeling: worked started in 1878 complete in 1881.
Three of them, the Darjeeling Himalayan Railway, the Nilgiri Mountain Railway, and the Kalka–Shimla Railway, are collectively designated as a UNESCO World Heritage Siteunder the name "Mountain Railways of India". The fourth railway, the Matheran Hill Railway, is on the tentative list of UNESCO World Heritage Sites.[1] All four are narrow-gauge railways, and the Nilgiri Mountain Railway is also the only rack railway in India.
Some mountain railways such as the Lumding–Badarpur section have been converted to 1,676 mm (5 ft 6 in) broad gauge, which is the nationwide standard, while some railways such as the Kangra Valley Railway are in the process of being converted to broad gauge.