Teotihuacan is an ancient Mesoamerican city located in a sub-valley of the Valley of Mexico. Teotihuacan is known today as the site of many of the most architecturally significant Mesoamerican pyramids built in the pre-Columbian Americas.
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20 years after people: Plant life has invaded the ruins of Teotihuacan without humans to maintain the site, completely covering the Avenue of the Dead, hiding it once again, eventually the entire site will disappear under plant growth, but this will preserve the site thousands of years, just as it had done during the time before it was rediscovered. The eroding paintings and monuments located on the site will also be lost.