The heart of Argentine wine country is nestled in a valley beneath the snow-capped Andes whose iconic summit, Aconcagua, is the highest in the Western hemisphere. Glacial runoff from the mountain range feeds the miles of vineyards that, along with fruit and vegetable farms, blanket the lowlands. Rudy drives into the thin air of the Andes, visiting the graveyard of those who died trying to summit Aconcagua. His choice for high-altitude adventure: getting soaked while whitewater rafting. Back at sea level, he meets winemakers whose well-priced and elegant Malbecs are shaking up the world's wine market. A lunch of grilled meats prepared by gauchos in the middle of a vineyard is a reminder that the cowboy life is very much alive in this stunning region.