Perpetual Motion | National Geographic

life on Earth is hard perhaps nowhere
harder than here
and now every year a timeless drama
plays out of a bar a river
the elders have been through this many
times they must remember what awaits
them their young know only the pervasive
smell of fear from the instinct to stay
close
but they must press on
what on earth could drive this headlong
rush to slaughter only earth herself
with her insistent clocks
this story begins in the Great Rift
Valley where the continent is tearing
itself apart and being reborn
the planes in the shadow of the rift the
Serengeti
are threaded with the paths of the
millions on the move in a constant
burning search for fresh grass