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*runs out to car(in the 40 degree weather) and opens hood*
Yes, it goes to into the valve cover on that side where the circle thingy is, I think the proper term is the PCV.
looks like the previous owner did a PCV delete as well as plugging up the breather nipple on the intake tract. if it runs right then don't worry about it and hope your state doesn't do a visual emissions inspection and realizes the PCV delete.
the delete is popular for 99-01 cars which had poor oil baffles in the valve covers and allowed excess oil to be sucked up into the intake