The islands are volcanic ocean peaks, much as they are reef-ringed, not atolls, and are thereby highly fertile. Garove and Unea are the largest islands. The group was the chief copra center of Papua New Guinea, although cocoa is now the main crop harvested due to the depressed prices available for copra. The islands are situated west of north of Talasea peninsula, Nth Coast New Britain, with Unea some E of south of the main group, and the remaining other islands Mundua, situated eleven kilometers northwest of Garove, and Naragé some twenty-four km northwest of Mundua, the final extension of the sub-aqueous peaks chain being the Ottilian Reef a further twenty-two km northwest of Naragé, this last all but totally submerged at all tide states, and dangerous to shipping. Sometimes the submerged Whirlwind Reef a further fifty-eight km to the southwest of the Ottilian Reef is included in the island arc.
History
Naragé is a post-explosive-eruption volcanic remnant of approx of what was an island of prior to an eruption that occurred in approximately 1892. The resulting tsunami reached 100 metres on impact on Ningau, wiping out all but two persons of the lowest-lying of three villages - Goru - and caused major disruption and reduction of population over a wide area of the north coastal areas of New Britain and quite possibly New Guinea and the Western Islands group, plus other islands. A wave of such magnitude would have made the 1997 Itape wave little more than a reef or shore break. In German times prior to World War I this was - outside of Kokopo, at Rabaul - the stomping ground and major enterprise of the American-Samoan, Queen Emma, whose island group H/Q was Langu plantation, Vitu, and whose manager, a Dane named Peter Hansen, became quite famous for his retinue of concubines, some 26 in number, this the more surprising as the male:female birth ratio in Vitu proper was of the order of 103 males:100 females post-weaning. That is reversed upon Unea, and the social doyens of the upper Witus are or were the ladies happily bride-stolen by the Mundua and Witu lads on wife raids, there being no bride price to pay, and this keeping the populations pretty much stable and balanced wrt genders and genetic make-up. These figures are from the late 1960s and may not apply today, as one in fifty persons in Nuigini are now positive to HIV. Nonetheless it is an extremely rare occurrence wrt population make-up. On expulsion of the Germans post World War I the group was acquired by the island trading group Burns Philp, plantations comprising Lama, Meto, Ilia and Langu on "Big Vitu" - Garove - and Ningau as the plantation whole for Mundua-Naragé. Edward Hann was plantation manager on Ningau for approx. 36 years. During World War 2 the Japanese landed on one end of the Ningau and he was lucky enough to escape on the other side of the island. Langu was ceded by Burns Philp to the Coote family post World War II as compensation for the execution of their family head and Burns Philp Rabaul store manager by the Japanese for refusing them the keys to Burns Philp's Rabaul enterprises on invasion, and for the duration of the war Vitu was occupied by Japanese who had the sense to treat the native population well. Nonetheless, Coast-Watch activities proceeded, and one Tumbuan Tuagolo, or "Talasea" of Mundua acted as guide to Eric Feldt within the New Britain area. One of the greater claims to international fame of Vitu is that a daughter of the Langu manager for the Coote family, and later, owner, Richard
