This Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)sub-image covers a 12 x 12 km (7.5 x 7.5 miles) area in Northern Shanxi Province, China, and was acquired January 9, 2001. The low sun angle,and light snow cover highlight a section of the Great Wall, visible as ablack line running diagonally through the image from lower left to upperright. The Great Wall is more than 2000 years old and was built over a periodof 1000 years. Stretching 7240 km (4500 miles) from Korea to the Gobi Desert, itwas first built to protect China from marauders from the north.
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Image courtesy NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
