Lanin Volcano (3,776 m) is located in the south west of the province of Neuquén (39 S, 71 O) on the banks of the provincial route 60 which links Argentina with Chile through Tromen step (also called Mamuil Malal). It is surrounded by National Park and numerous lakes namesake (Huechulafquen, Paimún and Tromen).

Its slopes are covered by forests of Pehuenes (Araucaria araucana) tree that can reach 70 meters. tall, and grow only between 4 and 8 cm per year. Geologically, Lanin, is one of the youngest volcanoes in the Andes. It is considered extinct and one of the most beautiful mountains in the world.

His name, like all most of the names in the province of Neuquén, has its origin in the Mapuche language means "Sink" or "We sink (in volcanic ash or snow)."

It is considered the symbol of the province and is a central part of the shield and the flag of the same. The qualities that make the Lanin Volcano as well known and admired by every person who has ever gone to the mountain, are also those that make a mountain to respect. Its height and location makes its climate varies in minutes and transform it into a very crude.