The Hopi Indians are the Record Keepers of the Native Americans. The Hopis call this the "The Fourth Age of Man". According to them the earth has been wipped clean 3 times already. First by Fire, next by Ice, most recently by the flood... approximately 11,000-12,000 years ago. Some believe that the actual date of the flood occured on June 5, 8498 BC. According to the Hopis we are about to enter "The Fifth Age", which they call "The World of Illumination", which seems to coincide with the dawning of the Age of Aquarius.
The Hopis say that there will two more worlds after this. "The Sixth Age" which is "The World of Prophecy and Revelation" and "The Seventh Age" is "The World of Completion".