Green Lake is a lake in Hunter Mountains

Hunter Mountains

The Hunter Mountains of Lake Manapouri New Zealand named by Surveyor James McKerrow after the Famous anatomist John Hunter. The Hunter Mountain Range covers an area between The South Arm and Hope Arm of Lake Manapouri South to the Green Lake...

 in the Southland Region

Southland Region

Southland is New Zealand's southernmost region and is also a district within that region. It consists mainly of the southwestern portion of the South Island and Stewart Island / Rakiura...

 of New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

 located to the north of Lake Monowai

Lake Monowai

Lake Monowai is a large lake in the southern part of Fiordland National Park, in New Zealand's South Island, 120 kilometres northwest of Invercargill. At an altitude of 180 metres in a long curved valley, the lake appears on maps shaped like a letter "U". The western part of the lake is set in...

. The lake has no surface outlets but probably feeds several streams draining to lake Monowai via springs. The lake is a basin in the debris of the Green Lake Landslide, which is the largest known above-sea-level landslide on earth. Steep escarpments on the north and east sides of the lake form the head scarp of the landslide, which has an estimated volume of 27 cubic kilometres (6.5 cu mi).

The New Zealand Department of Conservation maintains a tramping hut on the northern shore, part of the Borland Road / Lake Monowai circuit.