Are you afraid of triangles? No?
Believe it or not, some people are.
I've definitely had some frightening thoughts while trusting nothing but friction climbing high up on these slabs. Lucky for you there is nothing to be scared of while retrieving this cache. Unless of course you happen to be claustrophobic.
I recommend coming down to GZ from the main path up by the flag but it absolutely can be done from below. Please be careful either way! As always please hide it just as you found it.