Movie – China’s Great Wall is a great documentary using rare aerial shots, and lavish reenactments in high definition. It reveals the myths, legends and technological marvels behind the massive structure, exploring construction techniques, and its history, featuring interviews with archaeologists, scientists and scholars. In 1907, Aurel Stein a British explorer and adventurer, making his way through the Taklimakan desert discovered the Jade Gate, the westernmost point of a more than 2,000-year-old fortification system. The walls, there are more than one, actually stretch for over 13,000 miles. They were built to defend the Emperor Wudi of the Han dynasty and his people from the barbarians (Mongolians) living in the steppes to the north (around 130 BC). Other dynasties and other emperors continued work on the Great Wall and branches of it, for thousands of years, using forced labor. The purposes of the Great Wall have included border patrols, imposition of duties on goods transported along the Silk Road, and regulation of trade and immigration. The Wall includes watch towers, troop barracks, garrison stations and signaling capabilities (using smoke or fire). The main Great Wall stretches from Shanhaiguan in the east to Lop Lake in the West, along an arc that roughly delineates the southern edge of inner Mongolia. Before bricks, the Wall was mainly built from rammed earth, stones and wood. I found this documentary fascinating as well as educational. Of course, some areas of the Wall, near tourist centers, have been preserved and renovated, but in many locations it is in disrepair.