The island formation consists of one high island with a peak elevation of 154 meters (505') and a low island (or motu) that winds along the base of the high island. The formation encloses two hypersalinelagoons called Roto Iti and Roto Rahi. The island also has a lagoon at its edge. All lagoons are connected through narrow channels. The island is home to 299 people (as of Aug. 2007 census).