Ancient nomadic herders beat a path to the Silk Road
Seasonal migrations marked early steps in establishing cross-continental trade route
![a Silk road caravanserai](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/03/030817_BB_silk-road_main.jpg?fit=860%2C460&ssl=1)
INN CROWD Highland herders in Asia forged high-altitude travel routes that became part of an ancient trade network known as the Silk Road, a new study concludes. This Silk Road caravanserai, or inn, near a simulated herder route sits at about 3,500 meters above sea level in Kyrgyzstan, near the Chinese border.
M. Frachetti