User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-11537809-20141011112904/@comment-25033519-20141011175739

Right, I meant Underground Volcano. I don't think Azure Rathalos was fightable in the Sunken Hollow in 4 though, kind of interesting that the Rath subspecies can be fought in a cave environment, but not the common ones, at least from what I've seen.