evidence: Northern (Fergana) road, which was used in the early Han period, had a special value in Antiquity. A considerable portion of this road passed within what are, today, the administrative borders of Southern Kyrgyzstan, covering the foothill areas of East, Southeast, Southwest and Northwest Fergana Valley. The route went from Kashgar through Terek-Davan pass, to the Alay Valley, along the Gulcha River and its inflows and to the city of Uzgen. It then turned to the Osh Oasis and to West and North Kanguy. It is documented that Zhang Qian travelled this road in 138 BC. This portion of the road is well marked by different sites, especially from Islamic period, when it was described in guidebooks as a transit corridor with two branches: