In a remote, far-flung cor­ner of Myan­mar the Himalayas end. Unlike the famous peaks in neigh­bor­ing Nepal, these mighty sum­mits are unknown to even hard­core moun­taineers. The rea­son is sim­ple: They are very dif­fi­cult to access. Just to reach the region requires an expe­di­tion of high order, and Myan­mar has with­held a self-imposed exile from inter­na­tion­al trav­el­ers for decades, mak­ing access even more dif­fi­cult. That’s why these peaks receive such scant traf­fic, and why, even in this mod­ern age, their true height is just an estimate.

This video doc­u­ments the elite team Nation­al Geo­graph­ic assem­bled to solve this alpine mys­tery. While moun­taineers have reached the sum­mit, no one has ever tak­en an accu­rate mea­sure of its height. It is cur­rent­ly believed to be 19,295-feet high. But as the team dis­cov­ers, there are ample rea­sons why Hkak­abo Razi has elud­ed def­i­n­i­tion for centuries.

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