So @cry-food was talking to me about map parallels between Echoes and Awakening, and they came across the fact that Zofia Castle has been replaced by a volcano, which is a big deal.
While it seems more likely that it grew gradually over those 2000 years between the games, I have some theories on how it could have happened within the echoes cast’s lifetime, mentioned here. I’ll be posting another thing soon talking about specific headcanons about character’s reactions to the drastic event.