It is a few 100 metres (330 ft) off the northwestern tip of Woodlark Island. Its area is 32 km². The highest point is 7 metres (23 ft) above MSL.
At the census of population of 2000, the island hat 758 inhabitants. 307 were in the principal village of Madau, located in the centre of the island; 237 in Muneiveyova in the north; and 178 in Boagis in the south.