User blog:Juoju/Mistake?

It says that in the Seadragonus Giganticus Maximus article that the Red Death lives in the lava in the volcano where the other dragons live. And I remember, from the movie, seeing a red glow inside the volcano, which means that lava was in it, right? However, when the Vikings blow open the base of the volcano and the Red Death rushes out, I don't recall seeing any lava flowing out of the hole. So, was this a mistake that the creators of the movie made? Or something else?