This is incredible work!
Some questions:
- Where did you get access to the quoted book? Is there any internet ressource?
- How much time did this work take?
- Is the Ming text totally readable to today readers?
- How did you get the locations of all the items where there is nothing to see on GE (bad imagery, totally detoriated item)?
- You show a line of towers south of the "main line". Is there any wall supposed to be (around 40° 2'15.33"N 119°26'19.09"E)?
Would you mind (in order to help 笨老外) if I find someone who could add pinyin in the commentary field?
What do you think about adding there also today's names if they are known and different?
I rather would like to add those things to your map than to have two or more concurrent versions.
This map will also be incredible helpful for our East Hebei Trek 2010. We can and will check most of the items you showed and can and will deliver photos for any of those which we can approach.
-chinoook