Very clean for a mine. I'd like to see some refs. I've been down to one salt mine in my life, but it was much different than this. I haven't seen a mine that's so well paved and such. I don't mean this in a rude way, so sorry if it comes off as such!
Here is a list of the first things that came to my mind while looking at your pic : - AO too much strong and saturated - the normal map on the plank wall seems to be reversed (motifs on the wood popping out) - ground is too much wavy (I took a look at the video : imagine the guy doing rollerblade on your ground :p) - your…