Show HN: Explore the Silk Roads through an interactive map

The map is interesting. I was a bit confused which one was the main route though. Is it, starting from Xian China, go west skirting the Gobi desert, then choose a mountain pass either north or south of Tajikistan, pass through modern day Iran, and finally to Constantinople?

Previously, with some background from OP: https://news.ycombinator.com/item?id=34684741