This is the most important historical discovery since the Sphinx. 75,000 years ago...early humans built a stone calendar that predates all other man-made structures found to date. Who were they? Why did they need a calendar? "Adam's Calendar" firmly places the many ancient ruins of southern Africa at a point in history that we modern humans have never faced before some 75,000 ago. It therefore symbolizes the first conscious human looking at his first sunrise as a free species on planet Earth.