Catalogued
Yu Ji Tu grid map
- Made by
- Song dynasty China; carver unknown
- Year
- 1136
- Field
- Before the modern era, and beyond the West
- Kind
- Map
- Room
- Places — Placed by reading its description, not yet studied
6 other forms share this skeleton
Source
Yu Ji Tu stele, Forest of Steles, Xi'an
Attribution less certain: contested, or no single inventor recorded