Mantle Collapse

Cutaway Earth with molten hell at the center, after Peleg's tectonics and radial shrinkage

If you use the Bible to deduce something and conclude that there needs to be something else in the Bible to confirm it, you search the Bible to find what you deduced was needed. If you find it, you're on the right track.

September 15th

Hardened lava flows around a volcano

Earth in Upheaval is the name of a book by Immanuel Velikovsky which lays out his summary of the evidence for cataclysmic upheavals in the history of Earth. Like a lot of things, it's partly right and partly wrong.