The ancient Mayas invented a calendar of remarkable accuracy and complexity. It uses a combination of thirteen cabalistic numbers with 20 figures of the days which gives us a value of 13x20=260 days, a moon based Maya year. It also describes nine different levels of evolution of consciousness, where each of the levels is developed by an era called an Underworld. Calculations based on it, predict mass enlightenment to become a possibility in 2011-2012, as the cycles come to an end, is thus that there will be a shift in Yin/Yang polarity favoring the front side of the human brain as the Universal Underworld becomes the dominating influence.