Situated at 19.17° South and 178.65° West, it covers an area of 18.5 square kilometres. It has a maximum elevation of 79 metres. The limestone belongs to the Koroqara Limestone (Tokalau Limestone Group) and is probably Late Miocene in age. In form it is a basin which has been breached in the north, flooding the interior, which has many islets and rocks. The island thus has this unique, beautiful lagoon that adequately supplies the inhabitants with different varieties of fish and sea shells. There are three terrace levels, two with maximum elevations 55 m and 40 m, the third being lower. There is an elevated notch 2 m above mean sea level.
There are three villages, Muanaicake, Muanaira and Naividamu. Total population was almost 600 in the middle 20th century but is now less than 400, due to migration to the mainland for secondary school education for children, and employment for parents.
The people are traditional carvers, skilled in the making of outrigger canoes and 'tanoa' (or 'kumete' in their dialect) which are wooden bowls carved out of local hardwood and used in formal and informal Yaqona Ceremonies and social gatherings across Fiji.