:03:14
Crossing into ancient Alaska
:03:17
migrating herds find new forage
and sheltering valleys
:03:23
but they're followed from Asia
by fierce carnivore...
:03:26
saber-toothed cats, giant bears
:03:29
and the greatest
of all predators.
:03:42
They arrive
in small bands from Siberia
:03:46
pressing east in pursuit of game
:03:49
unaware they're discovering
a continent.
:03:55
The hunters are sustained
by bison, moose, woolly mammoth
:04:00
and the wild reindeer
called caribou.
:04:11
Where frozen tundra
limits vegetation, meat is life.
:04:15
Most of the year,
it is kill or starve.
:04:51
The hunters prosper here
across millennia
:04:55
but as the receding lce Age
:04:56
opens the wall of glaciers
to the south
:04:59
most move on with the herds