1995 SL500 Mystery Hose Leaks antifreeze?

[Gusfazekas]

There is a leak of antifreeze eminating from a hose protruding through the floor pan. The hose is located, just behind/equal too, the rear of the transmission in the trans/drive shaft tunnel. The inside diameter of the hose is large enough to insert my finger, inside it is a coiled wire, probably designed to keep the pathway open. Because it is so far to the rear of the dash and the engine compartment, I am at a loss to understand where it came from and why would antifreeze be leaking from it. My only thought is that it must me some kind of drain line from the heater core but I don't even know where to find that under my dash. Any of you master mechanics have a clue? Any help to locate the origination of the hose would be appreciated, because thats where the leak is coming from. Thanks, Steve