Frozen North

The Frozen North is a large continent, or northern section of, the Central continent located directly above Equestria. The land is characterized by its overwhelmingly cold nature, with constant snow, ice and blizzards. The two noteworthy civilizations to exists in such a barren wasteland is the kingdom of Yakyakistan and the Crystal Empire, though the latter does so with magical protection while the former is simply resilient. Few ponies ore even monsters dare travel deep into the north, though magical splendors await those who do brave the conditions, such as realms like The Grove.

It's the opposite of the Mysterious South.