* Astronomy

Blobrana · L

RE: Great Wall of China

Blobrana · L

The Great Wall of Qi is the oldest existing Great Wall in China. Construction of the wall started in 685 BCE (during the Spring and Autumn Period) by the state of Qi, to defend against an invasion by the Kingdom of Chu.
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China is stepping up work to preserve the oldest section of the Great Wall after months of investigation to determine its length and location, archaeologists said Saturday.
The Great Wall's oldest section was built between 770 B.C. to 476 B.C. in the ancient state of Qi, hence the section is often called the Great Wall of Qi.
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Google Earth file (1kb, kmz)

Latitude: 36°20'35.31"N, Longitude: 116°38'3.18"E