The Kermadec Islands are a subtropical island arc in the South Pacific Ocean 800–1,000 km (500–620 mi) northeast of New Zealand's North Island, and a similar distance southwest of Tonga. The islands are part of New Zealand, 33.6 km2 (13.0 sq mi)] in total area and uninhabited, except for the permanently manned Raoul Island Station, the northernmost outpost of New Zealand.