The Volta Glacier is located in Mount Aspiring National Park

Mount Aspiring National Park

Mount Aspiring National Park is located in the Southern Alps of the South Island of New Zealand, north of Fiordland National Park, and between Otago and south Westland. The park forms part of the Te Wahipounamu World Heritage site.-Geography:...

 in the Southern Alps of the South Island

South Island

The South Island is the larger of the two major islands of New Zealand, the other being the more populous North Island. It is bordered to the north by Cook Strait, to the west by the Tasman Sea, to the south and east by the Pacific Ocean...

 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...

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It is split into upper and lower glaciers which are connected by an icefall. The Upper Volta Glacier is between 1600–2000 m (5,249.3–6,561.7 ft) in altitude and is surrounded by the 3 peaks of Glacier Dome, Pickelhaube

Pickelhaube

The Pickelhaube , also "Pickelhelm," was a spiked helmet worn in the 19th and 20th centuries by German military, firefighters, and police...

 and Fastness Peak, while the Lower Volta Glacier sits directly under the North side of Mount Aspiring / Tititea and lies between 1000–1400 m (3,280.8–4,593.2 ft). The Glacier feeds the Pearson River

Pearson River

The Pearson River is a river of the Otago Region of New Zealand's South Island. It flows north from Mount Aspiring's glacial lake, which is fed by the Volta and Bonar Glaciers, to reach the Waiatoto River.-References:...

, a tributary of the Waiatoto River

Waiatoto River

The Waiatoto River is a river of the West Coast of New Zealand's South Island. Formed from several small rivers which are fed by glaciers surrounding Mount Aspiring, it flows north along a valley flanked in the west by the Haast Range before turning northwest to reach the Tasman Sea 20 kilometres...

which eventually runs out to the West Coast.