The Silk Road: A New History

evidence

Argues from excavated documents at seven Tarim and Central Asian sites that most recorded traffic was local and small-scale rather than long-distance luxury trade, and that Chinese government military expenditure was the dominant economic driver in the Tarim oases. A necessary corrective to the popular image of continuous caravans crossing the whole length.

A evidence is not a place. Drawing it on a map would assert something about the world that no stored fact supports.