I know nothing about this sport and have never been inside a canyon like these, so I found it quite interesting, with lots of video of the various beautiful canyons they did. I can't do sports anymore, so I live vicariously through these films. This isn't the most high res film, but good enough, and it's great for an indie film of this nature. Some great shots of canyoneering.
The soundtrack of this film is really cheesy, low budget, and irritating. If not for that, it would be 5stars.
They do a good job of relating some of the woes of crowded nature and the safety aspects without hammering it in (lot of people need rescuing), although a bit snobby about other canyoneers and uh, 'other' demographics. I grew up with my family roughing it at a 'secret' camping spot high in the mtns of Colorado, and have also endured awful summer crowding in my favorite places, so I get the crowd/lack of respect thing. But we few aren't the only people who have a right to nature; there are just too many of us, and many bring too much home, noise and trash. But blame the people who have turned gorgeous places into tourist traps and marketed them relentlessly, with help from tourist hungry states.