180 Hidden Miles of Great Wall Found

This is quite amazing. Just recently, there were 180 miles of the Great Wall of China discovered, that were previously covered by hills and trenches. They have remained hidden since the Ming Dynasty (1368-1644). I wonder if this will change any historical theories about the layout of feudal societies at the time. Perhaps by realizing that the Chinese needed protection at the newly discvered area, it will shed some light upon the relationships between China and other surrounding people.

http://www.nytimes.com/2009/04/21/world/asia/21wall.html