Lanin National Park in the province of Neuquén (Argentina) at the campsite Piedra Mala Paimún at lakeshore at the end of the PN, entering Huechulafquen. This campground has hot water only 2 hours a day and no electricity. It is a fantastic place to spend a few days on the banks of Paimún and to be on the volcanic sand. The immensity of nature overwhelms you and you can feel in touch with her. You feel tiny at the foot of the volcano. The price is cheap for camping and the last slope to reach the camp is steep for cars, but we did it without any difficulties with an old car that wasn´t even a 4x4.