It's a shame, because this is a fun read, but a great deal of it is obviously completely fabricated. If you've ever been in the Amazon jungle (I have), or panned for gold (I have), or used a shotgun (I have) then it is obvious that the author has no inkling about how that sort of thing really works. Come on, eating roasted monkey tail like corn on the cob? The parts on searching for gold are particularly laughable. So enjoy it, but take it in the spirit of the "tall tale", where a good story gets stretched a bit to make it even better. There seems to be quite a genre of tall tales about the Andes and Amazon, passed off as the real thing (see Warriors of the Clouds, A Lost Civilization of the Upper Andes by Keith Muscutt). Ghinsberg did the tourist thing and came up with a good story, give him credit for that I guess.