High Quality Content by WIKIPEDIA articles! The Tabar Group is an island group in Papua New Guinea, located 40 km north of New Ireland. It is a part of the Bismarck Archipelago. The Tabar group consists of a short chain of three main islands - Tabar Island (aka Big Tabar) in the south, Tatau Island in the center, and Simberi Island in the north - as well as a number of smaller offshore islets. The highest peak is Mount Beirari with 622 metres.