Location and surroundings
Ark belongs to the Olivine Range, which sits within New Zealand on the South Island, in the Southern Alps and then the Seaward Southern Alps. Administratively it is in Southland, in the Fiordland Community and Southland District. At 2,291 m, it is the highest of the 42 named peaks in its range, and the surrounding terrain is steep alpine country with ridges, cols and neighbouring summits close by.
The area is part of a protected mountain landscape, with Mount Aspiring National Park and the Te Wāhipounamu - South West New Zealand World Heritage Area around the summit. That setting suggests rough ground, exposed slopes and changeable weather rather than easy open walking.
Neighbouring peaks
Ark sits among several nearby hills and passes, with the closest features all within a few kilometres. It is higher than most of them, but only by a modest margin over some neighbours such as The Tower and Little Ark.
- Pic d'Argent Col — 2,074 m, 0.6 km north
- Little Ark — 2,133 m, 0.7 km east
- Pic d'Argent — 2,130 m, 1.1 km north
- The Tower — 2,207 m, 1.2 km south-east
- Darkness Peak — 2,081 m, 2.0 km north
- Futurity Rock — 1,688 m, 2.4 km east
- Forgotten River Col — 1,827 m, 2.5 km south
- Ark — 1,709 m, 2.9 km south-east
These distances show a compact alpine cluster, with Ark forming the highest point in its immediate group.
The view from the summit
Within 25 km, the highest surrounding peaks are spread across the Southland mountains. To the south lies Mount Earnslaw at 2,830 m, 23.3 km away. Other major summits include Mount Edward to the east, Sir William Peak to the south, Mount Head to the south, Maori to the east, and Mount Lydia to the south-east.
From Ark, these higher mountains define the wider skyline and help place the hill within a larger alpine system rather than an isolated ridge.
The range
Ark is part of the Olivine Range, the narrowest named part of a chain that runs from New Zealand through the South Island, the Southern Alps and the Seaward Southern Alps. The range’s high point is Olivine Range itself, and Ark is the highest of its 42 named peaks.
That ranking makes Ark the main summit of the range, even though it is not the highest mountain in the wider region. Its position at the top of the Olivine Range gives it local prominence among the surrounding peaks and cols.
Climate and weather
Climate estimates from NASA POWER for 2001–2020 suggest a cold alpine summit climate. At the summit, the warmest month is about 2 °C in February, while the coldest is about -1 °C in June. Mean temperatures are above freezing only in January, February, March and April.
Precipitation in the surrounding area is about 2,150 mm a year. The wettest month is about 200 mm in January, and the driest is about 155 mm in February. Expect cold, wet and windy conditions to be common for much of the year.
Best time to visit
The most workable period is usually the warmer part of the year, when summit temperatures are more likely to sit above freezing. For Ark, that means the months from January to April are the best fit from the climate figures, with February the mildest month on average.
Even then, conditions can still be cold and wet at altitude, so a visit should be planned as an alpine outing rather than a casual hill walk. Snow, slick rock and poor visibility can still affect travel outside the briefest settled windows.
Nature and wildlife
The summit area lies in a protected alpine landscape of rock, scree, steep slopes and high ridges. In this part of Southland, vegetation is generally sparse near the top, with more plant cover lower down where the terrain allows it. The wider area is part of Mount Aspiring National Park and the Te Wāhipounamu - South West New Zealand World Heritage Area.
Wildlife in such country is usually limited by altitude and weather, so birds and hardy alpine species are more likely than dense forest animals near the summit. The main feature here is the mountain environment itself.
Practical tips
Even a short outing in this area needs proper alpine preparation. Wear sturdy footwear for rough rock and uneven ground, carry a warm layer for wind and sudden temperature drops, and expect wet surfaces after rain. In a protected area, stay on established routes where they exist and avoid damaging fragile alpine vegetation.
For mountain rescue in New Zealand, call 111 and ask for Police, who coordinate land search and rescue. On mobiles, 112 and 911 redirect to 111.
Interesting facts
Ark is the highest of the 42 named peaks in the Olivine Range, so it is the range’s main summit. It sits in a compact cluster of nearby hills and passes, with Pic d'Argent Col only 0.6 km away to the north and Little Ark just 0.7 km to the east.
Although Ark is the top point of its range, higher mountains appear within 25 km, including Mount Earnslaw to the south. That contrast is typical of the South Island’s layered alpine geography.
FAQ
How high is Ark? Ark rises to 2,291 m.
Where is Ark? It is in Southland, New Zealand, in the Fiordland Community and Southland District, within the Olivine Range of the Southern Alps.
Is Ark the highest mountain in its range? Yes. It is the highest of the 42 named peaks in the Olivine Range.
What is near the summit? Nearby features include Pic d'Argent Col to the north, Little Ark to the east, The Tower to the south-east and Darkness Peak to the north.
What can you see from Ark? Higher peaks within 25 km include Mount Earnslaw to the south, Mount Edward to the east and Sir William Peak to the south.
What is the mobile phone coverage like? Coverage in the hills is patchy and depends on the operator. On an open summit a signal is more likely, while deep valleys and ridges can block it. 112 reaches emergency services over any available network, and maps should be downloaded before setting out.