Shortland Islands
Bougainville is the largest island in the Solomon Islands archipelago. Most of the islands in this archipelago (which are primarily concentrated in the southern and eastern portions of it) are part of the politically independent Solomon Islands. Two of these islands - the closely connected Shortland Islands - are less than south or southeast of Bougainville, and about west of Choiseul, one of the a settlements of which, Poroporo, faces Bougainville.