User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-5460283-20130514030655/@comment-4911512-20130515220753

i dont know about volvidon digging, but i know how to get black diablos(probably regular diablos too but i havent free hunted him yet) to fly around a bit. when you're free hunting her, in area 2 get her to charge into the path that leads to the base camp and she'll fly up and back to the middle of the area.