O Le Pupū Puē National Park was established in 1978 as the first National Park in the South Pacific region. It extends from the highest points of Upolu Island down to the rugged Le Pupū lava cliffs on the island’s south coast. The Park includes large tracts of forest dominated by native plants and is considered as the island’s best-preserved remaining tropical forest. It includes parts of the Togitogiga water catchment, the main water source for four villages. The Site is an Important Bird and Biodiversity Area as well as one of the eight terrestrial Key Biodiversity Areas of Samoa. Its diverse habitats support four of the eight globally threatened bird species of Samoa including the critically endangered tooth-billed pigeon (Didunculus strigirostris) and the endangered mao (Gymnomyza samoensis).