1999 Dodge Durango coolant leak

So I went out to my truck about 15 minutes ago (or so) which had been sitting in the school parking lot for three and a half hours. I just got the truck and didn’t know about the fluid leak it seemed to have developed. I’m leaking coolant somewhere and it’s dripping down onto the topside of the skidplate, then out the oil pan plug access hole (I assume that’s what it is, random hole in the middle of the skidplate). In 3.5 hours, it managed to make a small puddle running slightly downhill about 4” wide and 6’ long. I went out and watched it for a minute or two and didn’t see any fluid leaking, so it’s not like it’s really dripping. When I got a rag and wiped around the oil pan plug hole, I got just a couple drops of coolant and mostly just grease/road grime.

The timing chain/gears and the water pump were replaced late last year. The water pump continued to leak, so the previous owner took it in and had the work redone. As far as he knew, the truck was good after that. I’m thinking this could be the culprit still, though. The fluid can’t be leaking from the radiator, as that would require the fluid to run down the plastic shroud on the bottom of the radiator, and actually go UP a quarter inch lip and into the skid plate. Any ideas as to what else it could be other than the water pump?

could be a freeze plug