Twilight Realm

The Twilight Realm is covered in twilight that sprung from Hyrule. In the early history of Hyrule, there was a fight over the power located in the Sacred Realm, the Triforce. A tribe attempted to steal the Triforce, and the three goddesses, Din, Nayru, and Farore, banished these people to the Twilight Realm. The only link connecting Hyrule and the Twilight Realm was the Twilight Mirror. The tribe banished to the Twilight Realm eventually became the Twili.