On a boat downstream

Rafting:To travel by raft
Raft: A flatbottom inflatable craft for floating or drifting on water: shooting the rapids in a rubber raft.
As one of the latest new comers to this outdoors activity I have to say this definition falls short. What we did last sunday cannot be described as just floating or drifting. It didn't even begin on water. It was a whole day plan, that began with a little horse riding, that I didn't participate in, given my lack of interest on those four legged beasts, and continued on in a two hour walk through a small stream with several ponds and slides carved by the water on stones, to finish gloriously in a trip down the Rio Negro with eight passengers, three guides, a rescue guy, two rafts and a kayak. Whatever I can write about it here doesn't even approach the real experience. The fear when I got thrown of the boat on the first rapid, not bacause of the risk of drowning, that was practically non existent, thanks 90% to the fact that I was wearing a lifesaver and 10% to the fact that I know how to swim, but because of the lack of control over my own body, that allowed the river to do whatever it wanted, without me being able to even have a saying on the matter. It was a lot of fun, a lot of exercise, and a very nice experience that I would really recommend, as long as you are willing to be physically destroyed the following day, as I am today, with a smile on my face and a scratch on my arm. [When, where, how]