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Great Wall could be lost to sands of the desert

Clifford Coonan
Thursday 30 August 2007 00:00 BST
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Sandstorms in northern China are reducing large sections of the Great Wall to rubble. Archaeologists say whole chunks of one of the seven wonders of the world could be gone in 20 years, swallowed up by the Badain Jaran desert.

More than 20 centuries old, the Great Wall once stretched 3,980miles through China, from Shanhaiguan Pass in the north-eastern province of Hebei to Jiayuguan Pass in the north-western province of Gansu. The wall was originally built to defend China against invasion by northern nomadic tribes.

About 310 miles from the Jiayuguan Pass lies Minqin county, where 37 miles of the wall is disappearing rapidly, a victim of extensive farming since the 1950s, which has sapped underground water and destroyed the local ecology. "This section of Great Wall was made of mud rather than brick and stone, so is more prone to erosion," Zhou Shengrui, a former curator of the local museum, told the Xinhua news agency. "Similar erosion happened in other places, but the situation is worse here. Frequent storms not only eroded the mud, but also cracked the Wall and caused it to collapse or break down."

This historic section of the great defensive structure was built during the Han Dynasty which lasted from 206BC to AD220, and extended during the Ming Dynasty (1368-1644).

More than 25 miles of wall in Minqin have disappeared in the past 20 years. The wall is just 2m tall in places, where once it stood 5m high.

Since the 1960s, the area has become ever more parched. The Qingtu Lake has dried up in the past 30 years and been swallowed by the Badain Jaran, the world's fourth largest desert.

Local residents talk of how the Great Wall gets shorter every year. "When I was seven or eight years old, the section of Great Wall west of my village was still as new. We used to walk on it like the ancient soldiers," Wei Zhaobai, 61, a resident of Chengxi village in Minqin, told Xinhua.

In a bid to fend off the encroaching desert, local workers were covering the wall remains with more sand and dirt. "If sandstorms strike again, it will take some time to blow the top-dirt away, and that'll give us time to build barriers and plant trees," said Mr Zhou.

The Great Wall gets an estimated 10 million visitors a year. These days, China's national symbol is in a sorry state, with only about 1,550 miles of it left standing.

"It saddens me to see the Great Wall being blown away, but we hope it can be a warning of what we have done to ourselves and our environment," Mr Zhou said.

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