The Ravine is a long, linear transition zone that connects the Mystery Lake and Coastal Highway regions.
Navigating The Ravine is trickier than other transition zones. Going from Mystery Lake to Coastal Highway, the player will have to balance across a fallen tree trunk, then follow a long, winding track through a tunnel and then cross a narrow and rickety train bridge before finally reaching a final tunnel through to Coastal Highway.
Since version 0.321 there is a rope (together with some other loot) in one of the hanging train wagons which can be deployed near the aforementioned fallen tree trunk to go to the bottom of the Ravine, where a distress pistol, some flare shells, a human corpse, a deer corpse and some other random loot can be found. The rope climb back is a very long one; having coffee or a bedroll will help prevent the player from becoming stranded on the Ravine floor due to exhaustion. Alternatively one can use an emergency stim, but the player will be fully exhausted afterwards.