At first glance, the shores of Last Hope Sound (Seno Ulitma Esperanza) may seem like a strange place to build a wood-fired pizza oven. Puerto Natales is a sleepy town in southern Chile, whose corrugated steel houses, painted defiantly cheery shades of blue, pink and green, seem incapable of keeping out the cold of a Patagonian winter. In the central Plaza de Armas, a coal-black steam locomotive, once used to take workers to a meat-packing plant across the Argentine border, now sits silently on a pedestal, embodying the eerie quiet of the mostly empty streets. Puerto Natales is still adjusting to its role as a rendezvous point and home base for tourists planning treks in Chile´s magnificent Torres del Paine National Park, a UNESCO Biosphere Reserve dominated by the 3000-foot basalt towers that give the park its name. But an ambitious young couple is eager to lead the way, one thin-crust pizza at a time.