A lone highway connects Tawang to mainland India. The last outpost – Bhalukpong in Arunachal Pradesh. Travelling it is like negotiating a passage through hell. It takes nearly an entire day to cover the 300-km stretch from Tawang to Assam’s Tenga. Also called Little Tibet, Tawang is controlled by India but claimed by China and is one of most contentious issues in the India-China relations. This was the road China used in 1962 to intrude 300 km into Indian territory. The road crosses four mountain passes – Nechi Phu, Sela, Bomdila and Bumla – some of which are as high as 14,000 ft.