Papua New Guinea largest towns are also located, including Port Moresby (capital) and Lae; other major islands within Papua New Guinea include New Ireland, New Britain, Manus and Bougainville. Papua New Guinea is one of the few regions close to the equator that experience snowfall, which occurs in the most elevated parts of the mainland. The border between Papua New Guinea and Indonesia was confirmed by treaty with Australia before independence in 1974. Maritime boundaries with Australia were confirmed by a treaty in 1978. Papua New Guinea is part of the Australasia ecozone, which also includes Australia, New Zealand, eastern Indonesia, and several
Buka, Papua New Guinea Buka, Papua New Guinea Buka is located on the southern coast of Buka Island, in the Autonomous Region of Bougainville, in eastern Papua New Guinea (country). It is the capital of the North Bougainville District, and the interim provincial capital of the Autonomous Region of Bougainville.' It contains Our Lady of the Assumption Cathedral. The city and Buka Island are separated from the northern tip of Bougainville Island by the Buka Passage. Both islands are in the northern Solomon Islands archipelago, and the only major ones not within the nation of Solomon Islands. The city is served by Buka Airport.