Pino Hachado Pass, Mountain pass between Argentina and Chile in Southern Andes.

Pino Hachado Pass is a mountain pass through the Andes at 1,884 metres above sea level, linking Argentina's Neuquén Province with Chile's Araucanía Region. The Argentine side lies within the volcanic Caldera de Pino Hachado, where the Argentine customs house stands. The route connects Argentina's RN-242 with Chile's Route 181-CH, which passes through the Las Raíces Tunnel on the Chilean side.

The pass was inaugurated in 1951 by presidents Juan Domingo Perón and Gabriel González Videla. In 1976, during the military dictatorship, the Ferrocarril Transandino Sur project began to link Chile and Argentina via the pass, but it was cancelled in 1987; the tracks are now destroyed.

The border communities maintain close ties through shared educational projects and regular interactions between residents on both sides. These daily connections shape life in the region and foster a sense of togetherness despite the political boundary.

Travellers must clear customs and immigration on both the Chilean and Argentine sides, and waits of about an hour are possible in winter and summer. The border post operates during the day, from 8:00 to 20:00, so check current hours before setting out. In winter snow chains are mandatory and the pass can close for snow or whiteout wind.

The abandoned Transandino Sur railway project, begun in 1976 under Argentina's military dictatorship to link Chile and Argentina via Pino Hachado, was cancelled in 1987; its tracks now lie destroyed near the pass.