"As the Heroes of Miitopia put their attention to the main Land, far beyond the reaches of civilization, an ancient enemy rises."
The Cold Frontier is a DLC Location in Miitopia: In A Dark World.. Much like Tschilly Peak, it has snow and cold winters, except that land is composed of ice.
Its importance is wide in Miitopia: Darkness Rises.
It houses many secrets and technological advances even though most are abandoned and long forgotten.
It houses the secret to the Ancient Enemies of Miitopia and "Immortality" as its referred, which is kept a secret deep within the lullaby of the crypt, unknown to the travellers there.