New Georgia Sound is the body of water that runs approximately through the middle of the Solomon Islands. The Sound is bounded by Choiseul Island, Santa Isabel Island, and Florida Island to the north, and by Vella Lavella, Kolombangara, New Georgia, and the Russell Islands to the south. Bougainville and Guadalcanal define western and eastern ends of the sound, respectively. The volcanic cone, Savo Island, northwest of Guadalcanal, is the only significant island lying within the Slot.