New Zealand Mt. Cook from Hooker Lake

Hooker Lake is a proglacial lake that started to form in the late 1970s by the recent retreat of the Hooker Glacier. It is located in the Hooker Valley, within the Aoraki/Mount Cook National Park in New Zealand's South Island, just south of Aoraki / Mount Cook. Hooker Lake's length has doubled between 1990 and 2013 from 1.2 kilometres to 2.3 kilometres, retreating by over 50 metres per year. The lake is expected to grow in length by another 4 kilometres as Hooker Glacier retreats further up the valley until the glacier's retreat will have reached the point where the glacier bed is higher than the lake's water level.

Aoraki / Mount Cook is the highest mountain in New Zealand. Its height since 2014 is listed as 3,724 metres, down from 3,764 m before December 1991, due to a rockslide and subsequent erosion. It lies in the Southern Alps, the mountain range which runs the length of the South Island. A popular tourist destination, it is also a favourite challenge for mountain climbers. Aoraki / Mount Cook consists of three summits, from South to North the Low Peak 3,593 m, Middle Peak 3,717 m and High Peak. The summits lie slightly south and east of the main divide of the Southern Alps, with the Tasman Glacier to the east and the Hooker Glacier to the southwest.