From the north campground visitor’s parking near Loop G (parking fee required), hike or bike north to the nearby trailhead. Continue north on the trail until you see a small foot bridge. Cross the bridge to GZ.
This is a nano but things just don’t seem to be what they appear.
The log is in the vial. Bring your tweezers. Bring your own pen.
Nota Bene: If you are caching in the late spring or early summer, mosquito repellent is highly recommended. They’re wicked this time of the year.