In this circuit the heights range between a thousand, four hundred and a thousand, two hundred fifty metres above the sea level. It has forty-four kilometres of asphalt road and eighty-six kilometres of dirt road. The entrance must be guided, considering that there is a control for the fauna of the Dirección de Recursos Naturales of the Province.
This one hundred thirty-kilometre tour requires a day. It is operable throughout the year.
Going towards the South of Malargüe, by the National 40 and Provincial 186 routes, the first attraction is the Cueva del Tigre, which is located on a plain, and whose entrance is shaped like a well, and then it becomes a horizontal gallery. It is advisable to go with a guide, considering that there are hazardous sectors due to landslides. Ten kilometres further, there is one of the largest lakes in Argentina: Llancanelo, inhabited by pink flamingos, black-necked swans, coscoroba swans, herons, chorlos, coipos, etc.
In the margins of the lake can be observed chinchillas, rabbits, rheas (ñandú petiso), guanacos and eventually boar. Near the lake there are the Pozos de Carapacho and la Cari Lauquén (green lake in Mapuche language), places where there is fresh water to drink. The return is done through the same routes.