I was approaching one of those rock underpaths/tunnels in the north east (pictures attached; sorry for night time). Not sure if I was standing or crouched. When I tried to go through the tunnel my character just went into the knee high rock floor. I was close to the rocks on the left and couldn't move anymore. So I tried to go prone and somehow ended up being stuck in the big rock. It happen to me a few times that my character just walked into the rock formation. But I always had no problem to continue to move.

Steam Id: STEAM_0:1:79773

Server-Address: 173.192.105.212 Port: 2502