Getting stuck in some canyon or rocky crevice is no fun, but occasionally these things can happen.
When it does, just use the new 'Player Stuck' button conveniently located in the Player UI under the Info tab.
'Player Stuck' Button Added
Source: Steam Community (opens in a new tab)
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.