Hkakabo Razi. Hkakabo Razi is believed to be Myanmar's highest mountain. The 19,295-foot (5,881??m)-tall mountain is the highest mountain in Southeast Asia as well. It is located in the northern Myanmar state of Kachin in an outlying subrange of the Greater Himalayan mountain system near the border tripoint with India and China. Its highest status has recently been challenged by 19,258-foot (5,870??m)-tall Gamlang Razi, located about 4.1 miles (6.6??km) WSW on the Chinese border.