I grew up in this area, I went to college in The Dalles and learned to windsurf as a kid in Hood River. Although I have not yet reviewed the entire route cache for cache (done about half so far), I looked at the overall route course and it appears to be fine. Jholly pointed out the "bad" caches that you will probably want to remove. I highly recommend that everyone bring along medical supplies (baking soda/water mix & calamine/cotton balls store easily) to combat poison oak should they get into it (is recognizable by its bright red leaves, will be small this time of year). The snakes will probably still be hibernating but it's always best to be on watch for them. If you have any questions at all please feel free to hit me up, I'm more than happy to answer anything for you. Sorry for the delay in this too, I should have offered my services earlier.