At this point you can see most of the Reserve, take a day out and relax.
You are looking for a small lock 'n lock container. camouflaged to blend in well with the surroundings. The walk is a steep climb up. Wear strong shoes and take lots of water. Enjoy the hike. Have fun as there are many GC's in the park.
A joint FTF award! That goes to SCUBIE999 and ERNESTYZEL