Journey to 10,000 BC is a History Channel documentary chronicling of the world as it was then and the events that changed it forever. 10,000 BC was a time of cataclysmic change on Earth. Extreme climactic fluctuations hurled the planet into a minor ice age; megafauna like the saber-toothed tiger and woolly mammoth were suddenly becoming extinct; and early humans began to inhabit North America. Cold and hungry, their fragile communities undertook perilous hunting expeditions. The slaughter of a single mammoth, weighing nearly ten tons, could be the difference between survival and death.