FYI: The original cache was hidden in a jar in an electrical box in the ground nearby. It would often disappear and/or wash away. It also was a hazard, since it was a hole in the ground. The electrical box is gone now.
FIRST STAGE: (Moved slightly 2/22/13) An out-of-place structure holds the coordinates to the final cache. Follow these coordinates to the final cache, about 1/2 mile away.
FINAL CACHE: An ammo box. If you have time, either direction on the hiking trail that begins near the final is a nice downhill walk back to the entrance of the preserve.