I first came across the idea that land could reinvent itself constantly in Roger Zelazny’s “Chronicles of Amber.: In them, the princes of Amber could rework the “shadows” to add or subtract whatever bits of landscape and world they wanted to create. For example, as they drove along, they could make waving fields of golden wheat slowly transform into a forest, or a purple crystal desert or anything.
Well, the first place I really came across such things was in my dreams, but that happens to everyone, I’d expect.
The idea is intriguing in the extreme. I love the idea of an infinite Universe, or infinite universes if you’d like, layered on top of each other in ever dimension you could contemplate and many you probably can’t.
Writers reinvent reality all the time. Fantasy writers especially. Why not mess around with the land too?