In the 1970's Argentina still had a lot of steam scattered throughout the country. The two most interesting operations were the meter gauge General Belgrano railway and the 75 cm "Old Patagonia Express" to Esquel. The Belgrano operated west and northwest from Buenos Aires all the way to the Chilean and Bolivian borders, with Tucuman being the steam center. The Belgrano was the most spectacular with its two trans-Andino lines and the climb to the Bolivian border. In addition to its big modern 2-10-2's, 4-8-2's, and 4-6-2's, its roster included all kinds of older engines including wood burners (that burned the local hardwood in the Chaco). Far to the south the little branch through the wilds of Patagonia seemed very reminiscent of the Carson and Colorado.