He appears to have ascended from Kabul to the plateau of the Pamir, and thence onwards by Yarkand, Khotan and Aksu.
High plateaus like that of Pamir (the " Roof of the World ") and Armenia, and lofty mountain chains like the snow-clad Caucasus, the Alai, the Tian-shan, the Sayan Mountains, exist only on the outskirts of the empire.
The high tableland of Tibet and Pamir to the lower plateaus of Mongolia, and thence N.E.
Higher portions of the plateau formation the empire has only comparatively recently planted its foot on the Pamir, and it was only a few years earlier that it established itself firmly on the highlands of Armenia.
Of the Pamir, the Tian-shan and the Ala-tau mountain regions, and farther N.E.