caption: Throwback Thursday: Last Secret <PERSON> into the Mysterious Beijing Underground City
exif: {"Image ImageDescription": "A mural dedicated to the workers who dug the tunnels that later became the Beijing Underground City in Beijing, China. In 1969, 70,000 workers started digging a sinuous network of tunnels dubbed the \"underground Great Wall\" to protect the population when war with the Soviet Union seemed iminent. At Beijing Underground City, visitors descend 30 feet into the cold, damp bedrock to walk through a portion of the complex.  (Photo by Bryan Chan/Los Angeles Times via Getty Images)", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Artist": "Bryan Chan", "Image Copyright": "2015 Los Angeles Times", "Image ExifOffset": "642", "EXIF DateTimeOriginal": "2001:09:24 00:00:00", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "1200", "EXIF ExifImageLength": "681"}