Ancient Structures IV – Adam’s Calendar, Great Zimbabwe and Nabta Playa

#AdamsCalendar Adam’s Calendar is a series of stones believed to be the oldest man-made structure on Earth. Sometimes referred to as “African Stonehenge”, it predates both Stonehenge and the Great Pyramid of Giza by tens of thousands of years.

#GreatZimbabwe Perhaps the most famous site in southern Africa, Great Zimbabwe is one of the oldest and largest structures located south of the Sahara Desert. Construction of the monument began in the eleventh century and continued through the fourteenth century, spanning an area of 18,000 acres and covering a radius of 100 to 200 miles.

#NabtaPlaya Sometimes called Egypt’s Stonehenge, it was an important ceremonial center from 11.000 to 5.000 years ago. Archaeological discoveries reveal that the people of Nabta Playa had much more advanced knowledge of astronomy and mathematics than previously thought possible.