we are about to book flights to Argentina for next week (very spontanously!)...therefore we are not prepared at all. We are thinking about going north of BA for 1,5 weeks and maybe we want to go to the area of Bariloche. But, we definitly don't want to go skiing. What about trekking tours? kayaking (we are semi experienced). what are the best ways to see the national parks? is ist only possible with a rental car? We would be very thankful for some information! the lonely planet has tons of trips, but we don't know what we can do in the winter season.