Posted Jan 30 2013 - 10:39 AM
I think it's fairly clear that the "time before time" refers somewhat nebulously to the period before any written historical records, whenever that is for the person speaking. For the Matoran of Mata Nui, the "time before time" was the period before the Great Cataclysm, since as far as they knew (and as far as the Turaga would tell them) the only record of what had transpired before they arrived on the island was the oral tradition of the Legend of Mata Nui. For those living on Metru Nui, it was some time far earlier. So as Lyi says, just a more flowery way of saying "prehistory".
The call of a Dragon in danger to save. All must unite, with Magic, be brave!