The trip starts at Bahía López harbour, located on 32 km. of Circuito Chico. During the navigation, Brazo Tristeza of Nahuel Huapi Lake will be explored. This is a deep glacial fiord, surrounded by imposing mountains and waterfalls, only accessible by boat. From Bahía López we go west, heading towards Brazo Blest, and then around Llao Llao Peninsula to reach the mouth of Brazo Tristeza, where water becomes calm and protected by the mountains. Navigating deeply into the lake, between López Hill and Capilla Hill, numerous waterfalls will start.
The woods will slowly transform into Valdivian rainforest, according to rainfall increase, yearly average 3,000 mm (9ft.) per year. Enormous trees like the coihue and alerce or larch grow in this jungle. Thanks to the humidity a proliferation of herbs, ferns, moss and fungus can be found.
The western area of Brazo Tristeza is a Strict Natural Reserve, which preserves numerous species, being one of the most important the Huillín (Lutra Provocax). It is also Nahuel Huapi’s National Park symbol. We will probably observe many bird species, from condor to aquatic and woods birds.
Coasts of the Brazo Tristeza are rocky and rough, with few beaches. Sign of the presence of glaciers 5000 years ago can be seen clearly on the rounded rocks. During the trip, and if the sky is clear, we will appreciate the majestic Mount Tronador, which appears dominating the landscape with its glaciers and eternal snows.
Once at the end of Brazo Tristeza a marked path awaits; it takes a simple walk until reaching Frey waterfall, at the heart of the woods; an idyllic place, where nature expresses herself all around. After the walk, we start our way back, enjoying lunch on board. The perfect end to this exploration around one of the most beautiful and wildest areas of Nahuel Huapi National Park. The experience on board is pleasant and friendly, enjoying a close contact between passengers, guide and crew.