Usually they're always underfoot, and, come to think of it, we haven't really been seeing many of them lately. I guess this is where they went. Strange I didn't see any of this while deep cleaning the caves, though.
The giant skull has announced itself. Turns out it's the disembodied head of Mr. SkellyBones, the guy we played "Find the Skull" with before leaving for the moon. We left him here, and he must have made a big mess before combining with the ghastly souls to make this unholy conglomeration.
And now he's created a mega-huge thunderstorm. What's worse, we have very little left to fight him with, since we just got through defeating the face pumpkin. Dr. NumbSkull is still in his lab studying trapped magic, and I still don't have my firesuit. I suspect the pumpkins were meant to be a distraction while Mr. SkellyBones gathered his power.
This is looking to be a very tough battle, and unless we figure out something good, it might be a long battle as well.