Where's the Snow Dojo?

Here's a message from Polo Field:

Hey ninjas,

Alright! You know the Card-Jitsu Snow Beta Test is coming. You know Snow Ninjas will be teaming up with Fire Ninjas and Water Ninjas. And you know that together, you'll be going up against dangerous villains: Scrap, Tank, and Sly. 

So now the question is: where's the battle going to be?

Tell us where YOU think the Snow Dojo will be and what it'll be like!

Waddle On!
- Club Penguin Team

Ooh... maybe in Tallest Mountain? Maybe in a undiscovered Card-Jitsu Mountain? Hum...

Credit to Mountain717