New Information
New mapping information proves the Great Wall
of China to be larger than previously thought. A Chinese government survey
discovered new sections in Liaoning and Gansu provinces, according to BBC News.
Misconceptions
Contrary to some expectations, the Great Wall
of China is a winding series of walls and barriers in Northern China, not a
single, long, continuous wall.
It has been photographed from orbit, but cannot be seen from space with the naked eye, according to a 2005 NASA article.
It has been photographed from orbit, but cannot be seen from space with the naked eye, according to a 2005 NASA article.
Length
Altogether, according to the BBC figures, the
length of the Great Wall of China totals 8,850 km, or 5,500 miles long. This
figure includes 6,259 km in actual wall sections, 2,232 km of natural defenses,
and trenches totaling 359 km in length.
Width
The width of the Great Wall of China varies
over different sections. By most estimates, such as those used by
engineering.com, the wall's width averages 6.5 m, or 21.3 feet, at the base,
and 5.8 m, or 19 feet, at the top.
Height
According to these same estimates, the height
of the Great Wall of China averages 7 to 8 m, or 23 to 26 feet high, with
fortifications reaching 10 m, or 30 feet in height.
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