Terrain consists of two main islands Savai'i and Upolu, with settlements on Manono and Apolima in the Apolima Strait between Savai'i and Upolu. A small uninhabited island Namua sits between Manono and Apolima. Off the east end of Upolu are the Aleipata Islands, small uninhabited islets; The terrain of the two main islands are narrow coastal plains with volcanic, rocky, rugged mountains in interior.