Hey there, before going ahead with your map submission review I'd like to inform you that I'm only giving you my personal opinion/feedback on your parkour map submission and my personal feedback will certainly not affect your parkour map submission in the slightest, I recommend that you take in my feedback to improve your submission if there are any flaws, you don't need to and you're free to ignore me but anyhow, before going ahead I'd like to mention that I'm a Moderator not a Map Judge so this is just my personal opinion and I am not accepting or denying your parkour map as this is only my personal opinion.
Originality/design ~ Haven't ever seen a frozen vault before, seem some Christmas/frozen maps but certainly not something like this before, good job on the theme seems quite interesting in my opinion. Great job on the hills, looks really good and It makes me actually feel like I'm in a frozen biome in front of a majestic frozen vault, impressive honestly. Possibly add details on the exterior, the outside, it's just flat stone walls and looks a little bland and out of place if you look at the map from behind, maybe just some simple stuff, some vines/leaves going down, etc just my opinion.
Parkour variety/difficulty/length ~ A perfect length for an EXPERT map, 70+ jumps is pretty good in my opinion, great job on the parkour length, talking about parkour the variety I really loved the variety in your parkour, you used some amazing blocks to make the parkour more interesting and fun to play, great job with the arrows, I might've got lost if I didn't see the directional arrows pointing me to the goal, good job on that section, the length, the design, variety almost perfect good job! :)
PS: Loved the little igloo you made on top of the Ice vault :D