bare rock, permanent or semi-permanent snowfields, and Torrecillas glacier between the two arms of Lake Menėnendez. In the west of the park, there is high rainfall and Valdivian temperate rain forests below the higher elevations of the Andes. Much of the rest of the park is Patagonian forest similar to the Lanín and Nahuel Huapi National Parks, with coihues and lenga. Arrayán (Luma apiculata) trees can be seen along the Arrayanes river. Although there is no true dry season, precipitation is heaviest in the southern hemisphere winter months of July through August. Development and tourism A hydroelectric dam, providing energy to industry in Puerto Madryn, has created the large Amutui Quimey Reservoir, which empties into the Futaleufú River which flows on to Chile. There is good walking and fishing in the park, and boat trips on the lakes. The Torrecillas glacier can be seen from tour boats on Lake Menéndez. See also Lake Menéndez Lake Rivadavia Footnotes National parks of Argentina Biosphere reserves of Argentina Protected areas established in 1937 Protected areas of Chubut Province World Heritage Sites in Argentina Valdivian temperate rainforest