Referenced In

The Travels of Marco Polo
by Marco Polo, da Pisa Rusticiano

"The Wakhjīr Pass, only some 12 miles to the south-west of Kök-török, connects the Tāghdumbāsh Pamir and the Sarīkol Valleys with the head-waters of the Oxus. A short halt allowed the surveyor to set up a light camp near its summit."