I've been to the viewpoint (the small huts you can see from everywhere around) today. Came from SantaClara like a lot of people do it. It's all free but when I arrived at the huts some guys forced me to pay saying its private. I discused half an hour with them. Even going back the same way wasn't possible because they started being agressive. So I paid the 'ladrones' and went to the police afterwards. walked up again together to get my money back but they were gone. I recommend dont go to huts just skip them (there is a path ask the people). And taking a guide isnt a better option, because they pay them too for nothing!