Let's go Canyoneering.
If you are not known to the trip host, you need to convince him that you are comfortable single-strand rappelling, without assistance, up to 50' and capable of down climbing some class 4'ish rocky areas.
The chosen canyon and meeting location will be revealed to those who will go on the trip. You will get wet, at least up to your waist. Wetsuits are not required, but the water will be cold. However, we won't ever be in it very long. A set of pictures and videos will be shared with you so that you can see what the area is like.