So the Field Appalling sounds like a nice place. Probably just some tranquil tundra, dotted with softly-colored flowers and verdant hills.
Yeah, that's definitely what it'll be like.
ETA:
- Seeing the area around Golgotterath in greater detail made me ponder the circumstances of the Ark's fall. Could it be that there was so much heat in the crash landing that the Great Ordeal will be traveling over a great deal of glass?
This could actually be an aspect of the Field Appalling come to think of it. We have at least one first hand description of the area near Golgotterath, from the perspective of Sarcellus-- after his face is burnt, he recalls with fondness the "cool chill of the wind on his body as he raced across the snowy fields of...?"
Not a verbatim quote, but he does mention an actual place name. It may just be referenced generally as Agongorea (it definitely wasn't the Appalling Fields), but the Plains of Shigogli rings a bell too...
Even so, if the area beyond the Occlusion was in-fact glassed from the crash (it almost certainly would have to be given the Ark's size, but that doesn't necessarily mean Bakker included it), that was, what, like ten thousand years before the story or something? It would have long been covered by elements, at the very least snow and ice, or so I would assume.