1. You can walk through the wooden door.
2. Once i got a wrong generated forest and one path was missing, i almost felt out of the map.
3. If you are at the other door you can walk through that too if you dont click on it and fall out of the map and die, i got a MAV after loading the game then.

My game keeps freezing then crashing when I come anywhere near SCP-860-1s door. Even the 1.0.1 patch didn't fix it for me :(