Alto3 operates in Catamarca, Argentina's high-altitude wine region known for intense sun exposure and diurnal temperature swings that concentrate fruit character. The winery produces Reserve Malbec and Reserve Cabernet Sauvignon, both of which have been assessed by major critics including Wine Enthusiast, Wine Spectator, Wine Advocate, Falstaff, and Decanter. The Reserve Malbec, Argentina's signature varietal, reflects the region's capacity for dark-fruited depth and structure. The Reserve Cabernet Sauvignon demonstrates how Catamarca's terroir shapes the classic Bordeaux variety into wines of substance and definition. Both wines represent the winery's focus on reserve-level expression from their vineyard holdings.