People go inside walls or just shoot/look through it without problems in most of the site making encounters with players a no-funny death.
glitch in the GreenPrison (like Balota,or another airfield) seen in older versions, you can go down the floor of it and see everything inside.
go near a wall, press Q or E and look through.
sprint to the wall (left side of the main door) and press Z, you are inside now
GreenPrison is fixed in other places
Hi PumbaPumba and thank you for the report!
The possibility to glitch inside of the inaccessible part of the building has been scheduled for a fix.
Would it be possible to specify where exactly you are able to lean (Q/E) and see through walls?
Thank you,
Andy