When SCP-860 is used to unlock and open a door, it opens to a small forest clearing centered on an 80 cm wide footpath with the presence of a blue-colored mist, designated SCP-860-1. 860-2, a very hostile feline-like creature, resides in the forest, and it stalks people before attempting to kill them. As soon as any person enters SCP-860-1, the door automatically closes. The trail inside SCP-860-1 usually leads to another door that leads to the room destination the key was used on.