With a gravity crystal and some willing friends you can get to some pretty op/exploit spots.
Behind The DAMN Rock
https://gyazo.com/222dfed9ecf7f9c3dd9f14dd393bc3dc
This was achieved by jumping into the top left corner (from the front) and slowly slide up
(I've tested without gravity crystal and it seems impossible)
On Top of Mine Support Beams
https://gyazo.com/b9a4eededb73fcf270151c58f9aaa6d7
This was achieved by jumping straight up and having one or more people under you pushing with their melee(s), eventually you will be launched high enough to land on the support beam
(It should be noted that deathclaws can still do damage to you while you are up there and It does not seem to progress crystal destruction)
I'm Sure There Are More
I was able to get on a statue while just testing to see how far I can push it.(Sorry for not having a screenshot) & (It should be noted that the laser can pass through the invisible wall, however it does not progress pillar destruction and that the acid works the same way on players as it does on ammo crates and the health orb.)
(Also I may have used this once for personal gain and I am willing to take the punishment if necessary. Just being honest about it.)