gas lines

hey guys.

I was just under my hood working on cleanming up the engine bay. On the passenger side fender well (inside the bay) I have a line that come up and is under the heater hoses. I tracked it as far as I could as i only had a few minutes and it seems like it runs right next to the gas line. I stopped mid car going back around the middle of the car. Kind of a bulkhead the lines went through. This line in my engine bay is open. Looks like there is a rubber hose that is supposed to be attatched and going somewhere.

I seem to remember there being more than one line coming out of the tank when I had it replaced. I did not do it myself but was there snooping when I could.

Any thoughts on this would be great. Thanks men.

BD