Showing posts with label UNESCO. Show all posts
Showing posts with label UNESCO. Show all posts
Great Wall of China
Wednesday, January 14, 2009
Along the Badaling Great Wall a large number of beacon towers were built at locations of strategic importance. In case of offense, smoke would be produced in the towers at daytime, and fires would be lit after nightfall so that within short notice message would reach the capital.
received, from Zhuang (zhuangyt, postcrossing)
"You Can Choose Tag #2"
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