Mr. Tines: We got the "Earth-shattering KABOOM!" this time.
UrsusArctos: The hill in the foreground disappears during the explosion. In Episode 14 we see a rather different animation being used for Sahaquiel going boom.
Dr. Nick: Oh, the wonders of cell-animation era crunch. This is quite possibly the biggest animation blooper in the original TV series proper that doesn't get creatively retconned.