Even if these assets won't be applied anywhere in EBF5, they look spectacular! I especially like the eye motif for the door puzzle and the atmosphere of the area. Whatever snow area (since there has to be one) ends up in the game, I hope you use these eyes somewhere else.
This looks good and I would love to see some assets used here used in game. Clearly your progressing well. I love it.
If there's something similar in EBF5 I expect some kind of colossal ice golem as the boss.
Disappointed that this won't be in the game, but hopefully the things I see get in. It's very reminiscent of Snowpoint Temple. I'm almost expecting some monster to be sitting in the bottom of it.