The Centre has formally identified 27 places and geographical features in Arunachal Pradesh by their standard names on official Indian maps.
The names were standardised and incorporated into Survey of India maps after consultation with the Arunachal Pradesh government.
The additions include the strategic passes Dzo La, Riza La and Thag La, Sambho Sarovar lake and the Sher-e-Thapa Memorial.
Twelve villages and localities were also included, among them Longju, Jaswant Garh, Jairampur and Kamlang Nagar.
The move follows repeated Chinese attempts to assign its own names to locations in the state, which Beijing calls 'Zangnan'.
The Thag La ridge area is historically associated with the events preceding the 1962 India-China conflict.
A memorial site in Arunachal Pradesh commemorating Rifleman Jaswant Singh Rawat of the 1962 war.
The national mapping agency under the Ministry of Science and Technology, responsible for official topographic mapping of the country.
The effective boundary between India and China, along which the naming dispute plays out.
Arunachal Pradesh is India's easternmost state, sharing international boundaries with China to the north, Myanmar to the east and Bhutan to the west. Its mountain passes have long served as the crossing points that give the state its strategic significance.
GS Paper II > India and its Neighbourhood; GS Paper I > Geography of India
General Awareness > Border Security and Strategic Geography
General Awareness > Indian Geography and Current Affairs
India's national mapping and surveying agency, functioning under the Ministry of Science and Technology, headquartered at Dehradun.
The name China uses for Arunachal Pradesh, which it claims as southern Tibet — a claim India rejects.
A term for a mountain pass in Tibetan and related Himalayan languages, as in Dzo La and Thag La.