There is a long running Central Florida pun which involves going behind a waterfall and calling it "the back side of water". In a blatant ripoff of that phrase I'm calling this cache The Back Side of Woods. Perhaps that will make more sense when you hike the trail leading here. You're looking for a gold bison which at one time was on a host but not now so use your imagination.
At the end of Powerline Road is a scenic parking area and a short trailhead before you need to jump trails early on. Be advised that St Johns River can rise as much as 6 to 8 feet during the rainy season. At times this route will require wading a short distance. Or you may need to find a longer, less interesting route. Infrequently the entire area could be under water. This is also a hotspot for wildfires during the dry season. And there are alligators in the water. If that's not enough danger, I forgot to mention I saw a pygmy rattlesnake near GZ. Good luck!