While in Villa Traful, ask for directions on how to reach the sports practice camp. Once there you will find the trail among cypress and coihue trees. After 1500 meters you will reach the "nose". The trail continues upwards and the vegetation starts to get cubby. You will be having glimpses of Lake Traful down bellow. You will reach the base of the cliffs of Mount Negro. Stones and sand form the ground. If you walk around the towers to the left hand side you can reach the highest point at 1900 meters where you will find a monolith.
If you descend by the right hand side you will reach Mount Monje. Because of its height, the view is magnificent: all of lake Traful, the Andes with all its chain of volcanoes including the Lanín Volcano. This is no trek for beginners and in order to enjoy it you must calculate a whole day. The return trip can be done the same way you came up or by way of the Coa-Có waterfall and Pampa de los Alamos.