Spreading out from the capital, the pampas region extends south beyond the borders of Buenos Aires province and west into the province of La Pampa. These are the hearty flatlands that feed a carnivorous nation thanks to local livestock, which outnumber people by a wide margin. When you drive these two-lane ribbon highways that parallel irrigation ditches and canals, and where water fowl light above the pasture in breathtaking murmurations, you'll be forgiven if you lose all train of thought and become hypnotized, if only for a moment. Such is the poetry of monotony in the Argentine plains.
In southern Buenos Aires province, however, the endlessly flat plain is punctuated by the Sierras de Tandil, an ancient mountain range, worn to low summits that barely reach 500m. A little to the west, Sierra de la Ventana’s jagged peaks rise to 1300m, attracting hikers and climbers from BA and beyond.