As one of the few who have found this cache, I definitely recommend doing it during a warmer time of year. We went back in March, and some of the people in the group with less -ahem- "natural insulation" were very cold. You WILL be covered from head to toe in mud and you will get very wet. We washed off in the stream outside. That was bad enough in March, and I have trouble imagining it in December. It took us about 2 hours to get all the way in and another 2 hours to get back out, and we were exhausted after we got out. We happened to go with one of the cache owners, whithout whom I don't think we would've made it all the way to the waterfall. If the money is right I might could be convinced to go along and serve as a guide... :twisted:
We all agreed that we had a great time doing this cache, and some of the guys are potentially wanting to go back some time just for fun.