Los Arrayanes National Park was created in order to preserve a singular forest area composed of arrayanes.
Even though arrayán trees (Luma apiculata) can be seen on the way to the end of the peninsula, the forest of 300 year old arrayanes covers 0.2 km² of the southern point, with individuals of over 600 years. The forest can be reached by boat from different points of the Nahuel Huapi lake, or a 12 km path from the beginning of the park at the port of Villa La Angostura. This path, full of ups and downs, is also popularly done by mountain bike.
There are a few pudú and huemul deer, guanacos, monitos de monte and small foxes. Among the birds, condors, eagles, hawks and woodpeckers can be found here.
Even though it was already part of the Nahuel Huapi National Park, Los Arrayanes was created in 1971 to protect its forest of rare arrayán trees. To protect the soil and the roots of these fragile trees, a wooden path has been made for the tourist to enjoy the view of the cinnamon-coloured trees.
PN Los Arrayanes (Los Arrayanes National Park) preserves a sample of the patagonic forest eco-region, which has wet and cold warm climate, with winter snowfalls and rains. During almost all the year there are frosts and strong winds from the West.
This eco-region has high mountains, with glaciery valleys. “Semideciduos” forest, which is high represented in the north but not too much in the southern part, dominates the area and alternates with “turberas” in the southern part.