As Master Gossay had said, the rock shell was collapsing.
Ian looked up and saw dense cracks spreading across the crystal-like rock shell overhead, branching out like tree limbs, emitting unsettling creaking sounds.
But behind the collapsing crystal rock shell, part of a giant steel structure was revealed, as well as the fragile rock layers around the structure.
——The crystal rock shell is an added structure... This place isn't entirely a natural rock formation!
"So that's how it is!"
The youth had an epiphany, finally understanding the nature of the Rift Valley Zone, "The entire Rift Valley Zone is a cooling interchange! All these intertwining and dense channels are the cooling ducts of the past!"
From the beginning, Ian had felt something was off about the lay of the land here; it didn't look at all like a valley eroded naturally over time.