It was established as the border between
Sikkim and Tibet's
Chumbi Valley by the 1890
Convention of Calcutta reached between
British India and
Qing China. The Convention deemed the Dongkya Range to end at Mount
Gipmochi at the southern end, which was defined as the
trijunction between India, Tibet and Bhutan. However the
Doklam plateau at the southern end gives rise to complications and the present day
border dispute between Bhutan and China. Dongkya Range is politically important, however
S. G. Burrard,
H. H. Hayden and
A. Heron comment that while Dongkya Range is politically important, "but from a Himalayan point of view too great a topographical emphasis was given to them upon maps". == Passes and peaks ==