Breather hose?

I found a small hose hanging at the left hand side next to the cam cover under the hood this morning.
Tracing it downwards it connected to the front axle so I think it's some kind of breather hose.
Does anybody know where it's supposed to lead to at the other side?

If it is in fact your differential breather then it just sits there not connected. It allows you to submerge the differential while still allowing it to breath.

thnx alaska !