A Glimpse Before and A Glimpse Beyond

How did the Neanderthals, the "Abli", really die off? Did the ancient "Khayni" have a hand in this? Travel back now to witness the last encounter and attempt to save the last Neanderthal. What was special about this prophet who tried to stop the slaughter tens of thousands of years before? Did his travels--through flame--bring him to just beyond the modern day? What is special about the young modern boy, Ben, who bragged to friends of his ability to travel? They laughed when he failed... but did he go beyond?