Physical map of Heilongjiang
Physically Heilongjiang is a land of varied topography. Much of the province is dominated by mountain ranges such as the Greater Khingan Range and Lesser Khingan Range, Zhangguangcai Mountains, Laoye Mountains, and Wanda Mountains. The highest peak is Mount Datudingzi at 1,690 metres, located on the border with Jilin province. The Greater Khingan Range contains China's largest remaining virgin forest and is an important area for China's forestry industry.
The east and southwest of the province, which are relatively flat and low in altitude, contain the Muling River, the Naoli River, the Songhua River, the Nen River, and the Mudan River, all tributaries of the Amur, while the northern border forms part of the Amur valley. Xingkai Lake (or Khanka Lake) is found on the border with Russia's Primorsky Krai.
The east and southwest of the province, which are relatively flat and low in altitude, contain the Muling River, the Naoli River, the Songhua River, the Nen River, and the Mudan River, all tributaries of the Amur, while the northern border forms part of the Amur valley. Xingkai Lake (or Khanka Lake) is found on the border with Russia's Primorsky Krai.