I had been toying with the idea that the reason the Gorgon doesn't get out and rampage around as much is that in the last few centuries he got so dense that he'd sink through ordinary dirt as if it was quicksand, so that only the most solid rock supported him ... for now ...

This is not something he'd advertise, but is one more answer for "Why hasn't the Gorgon conquered more stuff, especially in the last 5 centuries when there isn't an empire to stop him."

Lyndon