The Snares Islands, known colloquially as The Snares, is a group of uninhabited islands lying about 200 km (120 mi) south of New Zealand's South Island and to the south-southwest of Stewart Island / Rakiura. The Snares consist of the main North East Island and the smaller Broughton Island and Alert Stack, as well as the Western Chain Islands some 5 km (3.1 mi) to the west-southwest. Collectively, the Snares have a total land area of 3.4 km2 (1.3 sq mi).

Stewart Island is New Zealand's third-largest island, located 30 kilometres south of the South Island, across Foveaux Strait. It is a roughly triangular island with a total land area of 1,746 km2 (674 sq mi). Its 164-kilometre (102 mi) coastline is deeply indented by Paterson Inlet (east), Port Pegasus (south), and Mason Bay (west). The island is generally hilly and densely forested. Flightless birds, including penguins, thrive because there are few introduced predators. Almost all the island is owned by the New Zealand government, and over 80 per cent of the island is set aside as the Rakiura National Park.