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.
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.