tiny loose hose near radiator - can you identify?

[850TurboTurtle]

So I found this little guy sitting above the air intake tubing. This is on my '05 S80 that I'm getting ready to drive again. I can't remember what it was disconnected from. It has clear signs of being clamped, and the clamp is up the hose a few inches, but I can't see any place to reconnect it. Anyone with a T6 out there who recognizes this?

[abscate]

It’s either going to the purge valve nearby or to an atmospheric pressure (MAp) sensor that hides under that cowling, above the radiator. It’s looks like evap purge size to me, the MAP hose is smaller diameter