Secrets Revealed: Why are there so many caves on Deucado with smooth roofs?

There are many, many caves on Deucado. Rome has personally visited several of them as has Rei. Many, if not all, have a peculiar smooth roof. Does this mean anything? Is it just the way erosion works on this little planet?

The only help I can give you right now is for you to think about Rome's confrontation with MASAL in Rome's Revolution. Rei and Rome had just escaped Estar, accidentally killing her in the process. They travel down a long lava tube and during a break, Rei discovers a huge cavern just on the other side of the wall. He blasts a hole and they enter the cave. Rome shoots her plasma gun into the air like a super-flashlight and discovers the roof of that cave is unnaturally smooth. Does that help?

The answers to all your questions will be revealed in the upcoming novel Rome's Evolution which I hope will be ready to publish in May.