Sela Pass which is called as Se La is located on the border between the Tawang and West Kameng districts. This high altitude mountain pass is located in the Indian state of Arunachal Pradesh. Sela Pass has an elevation of 4170 m (13,700 ft) and it connects the Tibetan Buddhist town of Tawang to Dirang and Guwahati.

Arun Jaitley the Finance Minister of India announced that the Union Government will be building a tunnel through the Sela Pass. The purpose of building the tunnel is to ensure faster movement of ammunition and troops in Tawang. The union government is developing this tunnel to secure the defence of the country.

Arunachal Pradesh is the northeastern state of India. Established on 20th February 1987 Arunachal Pradesh shares its borders with the Indian states of Assam and Nagaland in the south. Arunachal Pradesh shares its international borders with Myanmar to the east, Bhutan in the west and China in the north. McMahon Line separates India and China. The capital of Arunachal Pradesh is Itanagar. There are 23 districts in the state with Itanagar being the largest city. Arunachal Pradesh is of a unicameral legislature with 60 seats having 1Rajya Sabha and 2Lok Sabha Parliamentary constituencies. Pema Khandu from the Bharatiya Janta Party (BJP) is the Chief Minister of the state. The Governor of the state is Brigadier Dr B D Mishra (Retired). 

(location of Arunachal Pradesh on the map of India)

Arunachal Pradesh covers a total area of 83,743 sq km (32,333 sq mi). As per the 2011 census, the population of the state is 1,382,611. The literacy rate of the state is 66.95%. Known as the Orchid State of India or the Paradise of the Botanists, Arunachal Pradesh is the largest of the seven sister state of northeast India. Called as the Land of the Dawn-Lit Mountains, the official language of the state is English.