To get to GZ:
Take the Swimming Hole Track. At the swimming hole, find the Rocks with Metal Climbing Rungs and head up. At the top of the Rock turn Right and head through the Blackberry Bushes. Once on the other side of the Blackberries you will find the First of Several Ropes that has been put there to assist with the Very Steep Ascent / Decent. The climb is very hard and the track is very dangerous. Watch out for falling rocks if people are on the track above you. At the end of the ropes you find the grade a bit more manageable and just follow the track all the way to the top.
To Find the Cache:
Find the 2 meter tall Broken Tree sticking out of the rock at GZ and put your back against the Trunk facing Downhill. The Cache is located at the 1 o'clock position about 4 meters down from the Broken Tree. Look under the rock and backwards into the Crack. The cache is packed in behind loose rocks. Please rehide and cover the Cache with Rocks before leaving. WARNING: There is a 60 meter high Cliff about 1 meter past GZ so be Careful. You are looking for a Red Metal Tool Box containing a Sistema Container.
Enjoy the Views:
After you find the Cache go around the Rocks to the South and enjoy the views Down to the River, Camping Area and Beyond.
WARNING: The Track to GZ is Very Steep with a High Risk of Falling Rocks and Unstable Ground. Do Not attempt this cache if there is High Winds or Rain as the Track is Unsafe. At GZ there are Very High Cliffs with Loose Rocks everywhere. Please be careful and know your own limitations.