Cresent Island

Isolated within the Fire Nation ocean, this crescent moon shaped island was the home to the Fire Temple for Avatar Roku. Although the history of the temple is relatively unknown at this point, Avatar Roku use to live there, so the temple was at least 100-200 years old. However, recently when Aang visited the temple, the events that followed that day resulted in the temple being destroyed. And as irony would have it, it was Avatar Roku himself who destroyed the temple with the aid of the island's active volcano. With the temple sages "escorted" by Zhao to the mainland, the island is thought to be deserted.