Nomonhan Burd Obo is an ''obo'',The Tokyo War Crimes Trial, Volume 1
Nomonhan-Burd+Obo
:File:NDL10269238 Court Record of the International Military Tribunal for the Far East 1948-01-30 (pp. 38,549-38,617).pdf :''Quote:'' "Nomonhan is an obo. It is called Nomonhan-Burd Obo. There are two obos and the border line runs between these two obos. <...> Nomonhan-Burd Obo itself is situated on top of a hill which is near the Hailastin-Gol River." a

cairn A cairn is a human-made pile (or stack) of stones raised for a purpose, usually as a marker or as a burial mound. The word ''cairn'' comes from the (plural ). Cairns have been and are used for a broad variety of purposes. In prehistory, t ...

set as a border marker in the Yongzheng period of the

Qing dynasty The Qing dynasty ( ), officially the Great Qing, was a Manchu-led Dynasties of China, imperial dynasty of China and an early modern empire in East Asia. The last imperial dynasty in Chinese history, the Qing dynasty was preceded by the ...

. The Japanese name "Nomonhan Incident" for the

Battles of Khalkhin Gol The Battles of Khalkhin Gol (; ) were the decisive engagements of the undeclared Soviet–Japanese border conflicts involving the Soviet Union, Mongolian People's Republic, Mongolia, Empire of Japan, Japan and Manchukuo in 1939. The conflict wa ...

is after the obo. The clashes resulted from the dispute: Japan maintained that the border between Mongolia and China runs along Khalkhin Gol, while Mongolia and the Soviet Union maintained that the border runs 10 to 20 km northwards and passes by the Nomonhan.

References

Manchuria Battles of Khalkhin Gol Hulunbuir {{Mongolia-geo-stub