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The Pyramid of Quetzalcoatl at Teotihuacan, Mexico #166276560
Description
Nearly 1000 years after its construction, the Pyramid of Quetzalcoatl continues to make news headlines to this day. In 2003, a sinkhole began to form in front of the pyramid entrance. Shocked and surprised, archaeologists soon discovered a man-made tunnel which dates back to the founding of the city. Using laser technology, scientists were also able to create digital maps of the tunnel, revealing its original shape and size.