1992 Isuzu Rodeo Question PCV Valve Location

On the left valve cover (looking from the front) is what appears to be a PCV valve with a hose going to the air cleaner and/or carb. On the right valve cover is a hole with a rubber grommet (but nothing in the ID of the grommet). Directly above this, coming out of either the bottom of the air cleaner or perhaps the carb, is a 1/2" rubber hose that has clearly broken off. Does a second PCV valve go here or something else? Thanks in advance.