Well basically it`s one of the oldest rites that the shamans of old used to pass down to their pupils/initiates. The Mayan and Inca people passed it down, although it is found in every native American nation with slightly varying practices. It used to take about 10 years to pass down this knowledge, but as the time is right, now for the critical evolution of mankind the native people in south America came down from the mountains to pass these rites down to us `normal folk.` They are energetically given into the auric field (from teacher to student) which you must germinate using the fire ceremony. There are currently nine rites in total which can be given seperately over time or in one swift kick up the bum initiation! I went for the latter!
All in all it`s purpose is to bring about a new homo luminous person to walk the earth, it`s almost a sort of preparation for the big change/energy shift that has been forecast around 2012.
Anyway I hope this has shed a bit more light on the subject, you can also get plenty of info online if you tap in Munay Ki into google should you be interested. In my opinion it`s well worthwhile, a real privilege actually.
Enjoy the day.