world's last great wildernesses. it stretches for a thousands miles, all the way down to the southern-most tip of south america. towering above the region are the an desandes, dividing chile argentina. we're headed on an epic journey up through patagonia's wild highlands. from its foothills to its volcanic plateaus, all the way up to its high ice fields. our journey begins on the grasslands of the patagonian step. sat 1,500 feet. here, one predator reigns supreme.