Argentina offers some wonderful white-water rafting opportunities, ranging from grade two through to four, offering exciting rides through magnificent scenery. One of the most popular routes is on the turbulent Rio Mendoza, cutting through mountain gorges, and on the Rio Manso through the southern part of the Parque Nacional Nahuel Huapi. The town of Esquel is also used as a base for rafters wishing to tackle Chile's renowned Rio Futaleufu, with its Grade 5 rapids. Numerous operators offer day trips. A good options for those looking for an exciting experience but who have no previous rafting experience is the Corcovado River, where the rapids never go above level three difficulty and the scenery includes beautiful birdlife, Lake Rosario, Lake Tiobal, Mount Centinela and the town of Corcovado. In the summer, when the waters of the river and lakes warm up considerable, it's possible to take dips in the river and lakes during rest stops. The Alumine River and its rapids is one of the most popular options for rafting, containing rapids ranging from level two to level five, with the upper part of the river being the more challenging and suited only for experienced rafters looking for a reasonable amount of adventure.