The discovery that three decorated stones south of Westport form a map of the southern skies 6,100 years ago leaves us with more questions than answers. For we now know that our ancestors did indeed leave a record of their work, and in spectacular style. They measured the known earth using their sophisticated knowledge of the night skies. 

So how did it happen that we forgot the meaning of some of the greatest scientific and artistic works known to humanity? And what can we do with this re-discovered knowledge?