Monteviejo operates in Tunuyán, in Mendoza's Uco Valley—a region defined by high altitude, intense sunlight, and the mineral-rich soils that shape Argentina's most compelling Malbecs. The winery's portfolio centers on this signature varietal, with three flagships: Lindaflor La Violeta Malbec, Lindaflor Malbec, and Petite Fleur Malbec. Each has been assessed by major critics including Wine Spectator, Wine Enthusiast, Wine Advocate, and Decanter. Malbec from this terroir typically expresses dark fruit density, structured tannins, and the cool-climate precision that distinguishes high-elevation Uco Valley fruit. Monteviejo's releases reflect the varietal's capacity for depth and complexity when grown in these conditions.