Shocking discovery of the new Great Wall

A group of American archaeologists has discovered a series of earthen walls hundreds of miles long covered before the famous Great Wall of the year 2,500 years.

>>>New surprises about the Great Wall

According to the research team, this can be considered as the 'First Great Wall'. It was built not to protect from foreign aggression like the existing Great Wall, but built up by the countries during the Warring States period to mark its own territory.

Remaining wall image in Shandong Province.(Photo: npr)

The wall is hundreds of miles long, has a place as high as 15 feet (4.5 meters) running around Shandong Province, east of China, built around 500 BC before the Great Wall was built under during Qin Shihuang.

The team is measuring the width of the wall.(Photo: npr)

'The wall runs along the ridge, the high hill of the hanging mountains east of Shandong Province. It is very well preserved. It is hard for anyone to imagine it as zigzagging through such a large area, ' study researcher Feinman said.

The wall is believed to be for nations during the Spring and Autumn War period. At that time feudal dynasties in the area of ​​China today were constantly expanding their army and fighting each other. This period of separation only ended when Qin Shihuang was crowned and united all the vassal states into a Qin dynasty in 221 BC.