Cloaked in legend and mystique, the Great Wall of China crosses mountains, grasslands and desert on its tireless course across what used to be China’s northern frontier.. A border defence system garrisoned by hundreds of thousands of soldiers at various times in China’s turbulent history, the Great Wall exists today in a state of picturesque yet precarious ruin, a fading relic with only a

The Great Wall of China existing today was mainly (re-)built during the Ming Dynasty (1368–1644). The Great Wall of the Ming Dynasty starts from Jiayuguan in western China's Gansu Province, following the mountains bordering Inner Mongolia and the North China Plain, to the Bohai Gulf at Shanhai Pass, and then looping round the Bohai Gulf to terminate at the Hushan Great Wall section on the

Burrows had an original idea for exploring the wall’s secrets, one that blends technology and history. He wanted to use of one of modern engineering’s most intriguing surveying tools–the 3D laser-scanning LIDAR (which stands for Light Detection and Ranging) drone that takes precise measurements by bouncing targeted laser lights off of objects–to produce unprecedented images of the wall.

The Great Wall of China stands as a testament to human ingenuity, perseverance, and the power of a united empire. It was built to serve multiple purposes - from being a formidable line of military defense and maintaining border control, to improving communication between regions and facilitating trade. However, looking at pictures of Great Wall, I notice many places where the fortifications rather look like bi-directional, e.g. the parapet seems to be convenient to aid defense from both directions, to North and to South, merely equally. (Left: Unidirectional; the parapet is built for defense on one side; right: Bidirectional; the parapet is . 335 396 209 452 14 71 255 203

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