"Huh? The forest?"
"You've been here a long time, right? When you walk towards the edges of this place, can you see the forest? I could see it when I turned around to... But if it's like the Moon... It's there, but I lose track of it once I look away, since I can't see the light emanating from it anymore. If the Barrier acts as a filter somehow... Then it can make the forest disappear. Can you see it? From the inside?"
Gulp-
She shook her head.
"All I see is more of this grass-covered ground... Then does the Barrier reflect the light like a mirror? If it's far enough, then we wouldn't be able to see our reflection. Did something like that happen to you? Ever?"
"No. Not as far as I can remember."
"Then an illusion that makes it seem like this continues and stretches forever when it's actually the forest? If that's the case, then the Barrier might be closer than it seems. It could be... A couple of steps away. Who knows, right?"