Referenced In

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

"…I will tell you of a very mountainous province called Cuncun, which you reach by a road right wearisome to travel."

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

"CHAPTER XLII. Concerning the Province of Cuncun, which is right wearisome to travel through."