NOTE: We are leaving for Egypt, this will be the last normal episode for a few weeks!

In Part 7 of our deep dive into Charles Hapgood's The Path of the Pole, we continue the discussion of the mysteries of "orogenesis" or mountain building. What forces can cause the enormous uplifts of so much rock? What is the cause of the numerous "basalt plateaus", where enormous amounts of magma poured out from underground and covered hundreds of square miles in layers of basalt hundreds of feet thick?

These questions and more are described in detail by Hapgood, in this week's episode.