Criterion (iv): The development of railways in the 19th century had a profound influence on social and economic developments in many parts of the world. The Mountain Railways of India are outstanding examples of a technological ensemble, representing different phases of the development in high mountain areas. The Mountain Railways of India are outstanding examples of how access has been provided to the plains and plateaus of the Indian mountains. They are emblematic of the technical and material efforts of human societies of this period to disenclave mountain populations through the railway. They are well-maintained and fully operational living lines. They are used in a spirit and for purposes that are the same as those at its their inception.