Cresting the Paso Garibaldi some 45km out of Ushuaia, the RN-3 descends towards Lago Escondido, the first of the lowland lakes, accessible via a 4km branch road to the north, before heading alongside the southern shore of LAGO FAGNANO. This impressive lake, also called Lago Kami from its Selk’nam name, is flanked by ranges of hills, and straddles the Chilean border at its western end. Most of its 105km are inaccessible to visitors, apart from dedicated anglers who can afford to rent a good launch. Travelling along the RN-3 as it parallels the lake, you’ll see several sawmills, denoted by their squat, conical brick chimneys, used for burning bark.