Mount Earnslaw | Pikirakatahi
Mount Earnslaw / Pikirakatahi is a spectacular twin-summited mountain rising above the Rees and Dart valleys near Glenorchy on New Zealand’s South Island. Reaching approximately 2,830 meters (9,285 feet) at its East Peak, the mountain is one of the highest and most visually dominant summits in Otago.
Part of the Forbes Mountains within the Southern Alps / Kā Tiritiri o te Moana, Mount Earnslaw is characterized by steep schist faces, extensive snowfields, hanging glaciers, waterfalls, and a massive ice-covered southern face overlooking Earnslaw Burn.
Its dramatic setting has made it one of the best-known mountains around Lake Wakatipu. Yet beyond its scenic appeal, Pikirakatahi holds deep cultural importance to Ngāi Tahu and has a significant place in the history of New Zealand mountaineering.
⚡ Fast Facts
| Feature | Details |
|---|---|
| Mountain | Mount Earnslaw / Pikirakatahi |
| Māori Name | Pikirakatahi |
| Country | New Zealand |
| Island | South Island |
| Region | Otago |
| Mountain Range | Southern Alps / Kā Tiritiri o te Moana |
| Subrange | Forbes Mountains |
| Highest Summit | East Peak |
| Elevation | Approximately 9,285 feet / 2,830 meters |
| West Peak Elevation | Approximately 9,252 feet / 2,820 meters |
| Prominence | Approximately 4,459 feet / 1,359 meters |
| Isolation | Approximately 22.58 miles / 36.34 kilometers |
| Nearest Higher Neighbor (NHN) | Mount Aspiring / Tititea |
| Key Col | Rees Saddle |
| First Ascent of East Peak | March 16, 1890 |
| First Ascensionist | Harry Birley |
| First Ascent of West Peak | February 6, 1914 |
| First West Peak Ascensionists | H. F. Wright and J. Robertson |
| Coordinates | Approximately 44.622°S, 168.411°E |
| Rock Type | Predominantly schist |
| Protected Area | Mount Aspiring National Park |
| Best Climbing Season | Generally summer and early autumn |
🌎 Where Is Mount Earnslaw?
Mount Earnslaw rises approximately 25 kilometers north of Glenorchy, near the northern end of Lake Wakatipu.
The massif stands between two important river valleys.
The Rees Valley lies to the east, while the Dart River / Te Awa Whakatipu drains the western side.
Together, these valleys frame one of the wildest and most beautiful sections of Mount Aspiring National Park.
Mount Earnslaw forms the southern end of the Forbes Mountains, a subrange of the Southern Alps.
The mountain’s isolated position makes it visible from numerous locations around Glenorchy and northern Lake Wakatipu.
One particularly impressive view appears along the Queenstown–Glenorchy road, where the snowy Earnslaw massif rises dramatically above the surrounding valleys.
🏔️ Mount Aspiring: Mount Earnslaw’s Nearest Higher Neighbor
The nearest higher mountain is Mount Aspiring / Tititea, approximately 36 kilometers to the northeast.
Mount Aspiring rises above 3,000 meters and is the highest summit in Mount Aspiring National Park.
Mount Earnslaw itself has approximately 1,359 meters (4,459 feet) of topographic prominence.
Its key col is Rees Saddle, at approximately 1,471 meters.
This substantial prominence helps explain why Earnslaw appears so massive from the surrounding valleys.
Although many mountains in the Southern Alps rise to similar elevations, relatively few stand so independently from higher terrain.
🏔️ Two Main Summits
Mount Earnslaw is better understood as a mountain massif than as a single pointed summit.
Its two principal peaks are:
East Peak
The East Peak, at approximately 2,830 meters, is the highest point of Mount Earnslaw.
It was also the first of the two main summits to be climbed.
West Peak
The West Peak reaches approximately 2,820 meters, only about 10 meters lower than the East Peak.
Despite the small elevation difference, the West Peak historically presented a more difficult mountaineering objective.
A high connecting ridge separates the two summits.
The first complete traverse between the East and West peaks was accomplished in 1933 by Scott Gilkison and A. Jackson.
🗿 Pikirakatahi and Ngāi Tahu
The Māori name associated with Mount Earnslaw is Pikirakatahi.
The mountain holds profound cultural, spiritual, historical, and traditional significance for Ngāi Tahu.
Ngāi Tahu traditions connect the formation of Pikirakatahi with Te Waka o Aoraki and the work of Tū Te Rakiwhānoa in shaping the South Island.
One tradition recounts that a wedge of pounamu was inserted into Pikirakatahi during its formation.
The mountain consequently became closely associated with the valuable greenstone resources of the surrounding region.
Pikirakatahi also stands as a kaitiaki, or guardian, over the pounamu resource.
For generations, Māori traveled through this mountain country to obtain pounamu. Camps were established near the mountain, while settlements associated with the pounamu trade existed closer to Lake Wakatipu.
The mountain is protected through a Tōpuni, a legal recognition acknowledging the special Ngāi Tahu values associated with the landscape.
🪨 How Mount Earnslaw Got Its English Name
The English name Mount Earnslaw was given by surveyor John Turnbull Thomson, an important figure in the early mapping of southern New Zealand.
Thomson named the mountain after Earnslaw in Berwickshire, Scotland, associated with his father’s home.
The name has an appropriate mountainous character of its own: older interpretations translate Earnslaw roughly as “Eagle’s Hill.”
Thomson was also an accomplished painter.
His paintings of Mount Earnslaw helped document the dramatic mountain landscape during the 19th century, before the area’s major summits had been climbed.
🪨 Geology of Mount Earnslaw
Mount Earnslaw consists largely of metamorphic schist.
This distinguishes it somewhat from the greywacke-dominated mountains around Aoraki / Mount Cook farther northeast.
The rocks began as sediments deposited in ancient marine environments.
Over millions of years, they were:
- Buried deep underground
- Compressed
- Heated
- Folded
- Faulted
- Metamorphosed
- Uplifted
Increasing heat and pressure transformed the original sedimentary rocks into schist.
Layers and planes within the rock remain visible across many exposed faces of the massif.
Although schist can form dramatic cliffs and ridges, heavily fractured sections can also produce loose and unstable climbing terrain.
🌏 Formation of the Southern Alps
Mount Earnslaw owes its great height to the same tectonic forces responsible for the rest of the Southern Alps.
New Zealand lies along the boundary between the Pacific Plate and Australian Plate.
Along much of the South Island, movement between these plates is concentrated around the Alpine Fault.
Compression associated with this plate movement has pushed enormous masses of rock upward, creating the Southern Alps.
Uplift continues today.
At the same time, erosion works rapidly to tear the mountains down.
Major erosional forces include:
- Glaciers
- Rivers
- Heavy rainfall
- Avalanches
- Landslides
- Frost
- Rockfall
The spectacular modern landscape around Mount Earnslaw is the result of this continuing competition between uplift and erosion.
🧊 Glaciers of Mount Earnslaw
Ice is one of the mountain’s defining features.
The Earnslaw massif supports extensive snowfields, glaciers, and hanging ice.
Among its most prominent features are the:
- Earnslaw Glacier
- Birley Glacier
- Large southern hanging icefield
The Birley Glacier lies on the eastern side of the mountain and has played an important role in historic climbing routes.
The enormous icefield above Earnslaw Burn is perhaps the mountain’s most visually spectacular glacial feature.
Ice cascades over steep cliffs at the head of the valley, producing waterfalls, icefalls, and frequent avalanches.
This extraordinary scenery has made Earnslaw Burn one of the most photographed mountain valleys around Glenorchy.
❄️ A Landscape Shaped by Ice
The glaciers visible today represent only a small fraction of the ice that once occupied this region.
During the Ice Ages, enormous glaciers filled the Rees, Dart, and surrounding valleys.
Their movement carved broad U-shaped valleys through the mountains.
Glacial erosion also created:
- Cirques
- Hanging valleys
- Steep cliffs
- Moraines
- Alpine basins
- Smoothed rock surfaces
After the glaciers retreated, rivers and vegetation occupied many of these valleys.
The mountain glaciers that remain continue to shape the landscape, transporting rock and sediment while periodically releasing avalanches and icefalls.
🌡️ Changing Glaciers
Like glaciers throughout New Zealand’s Southern Alps, the ice around Mount Earnslaw responds to changing temperature and snowfall.
Glacial extent can vary considerably over decades.
Retreat can expose previously ice-covered rock, alter climbing approaches, increase instability, and change the appearance of traditional routes.
For climbers, this means route descriptions from earlier generations do not always accurately represent modern conditions.
Crevasses, icefalls, exposed slabs, loose rock, and snow coverage may all change significantly from one climbing season to another.
🧗 First Attempt to Climb Mount Earnslaw
One of the most important early attempts on Mount Earnslaw occurred in 1882.
The Reverend William Spotswood Green, accompanied by Swiss guides Emil Boss and Ulrich Kaufmann, traveled to New Zealand primarily to attempt Aoraki / Mount Cook.
They also attempted Mount Earnslaw.
Poor weather and transportation difficulties prevented the expedition from reaching the summit.
Nevertheless, the attempt helped demonstrate the mountaineering possibilities of the Southern Alps during an era when very few of New Zealand’s major peaks had been climbed.
🧗 First Ascent of Mount Earnslaw
The East Peak of Mount Earnslaw was first climbed on March 16, 1890, by local guide Harry Birley.
Birley began his expedition from Glenorchy with photographer Fred Muir.
Muir accompanied him during part of the journey, but Birley continued toward the summit alone.
After reaching the highest point, he constructed a cairn and left evidence of his ascent.
The climb is especially notable because it occurred four years before the first ascent of Aoraki / Mount Cook.
Birley’s successful solo ascent therefore belongs to the pioneering period of New Zealand mountaineering.
🏔️ First Ascent of the West Peak
The slightly lower West Peak proved considerably more elusive.
It was not successfully climbed until February 6, 1914, almost 24 years after Birley reached the East Peak.
The first ascent was completed by:
- H. F. Wright
- J. Robertson
Their route approached through Wright Col before traversing toward the western summit.
The West Peak remains a more serious and less frequently climbed objective than the East Peak.
🧗 Climbing Mount Earnslaw Today
Mount Earnslaw is a genuine alpine mountaineering destination.
Although some routes are less technically demanding than climbs on Mount Aspiring or Mount Sefton, reaching either summit still requires appropriate mountain skills.
Climbers may encounter:
- Snowfields
- Glaciers
- Hard ice
- Loose rock
- Exposed scrambling
- Steep snow
- Crevasses
- Avalanche terrain
- Navigation challenges
- Rapidly changing weather
The East Peak has several established routes.
These include the:
- North Face
- East Face
- South East Ridge
- South Face
- Traverse from the West Peak
Routes on the West Peak include:
- Wright Robertson Route
- North Ridge
- South Face
- South Face–East Ridge
Conditions can substantially alter the difficulty of any route.
🧭 East Face
The East Face is historically important because it follows the general line of Harry Birley’s 1890 first ascent.
The route approaches across the Birley Glacier before gaining the northeast ridge.
Although historically significant, it is not among the most frequently used modern routes.
Changing glacier conditions have altered the terrain encountered by today’s climbers.
🏔️ North Face
The East Peak’s North Face provides one of the more straightforward established lines when conditions are favorable.
The route involves scrambling through lower rock bluffs before continuing toward easier upper slopes.
However, “straightforward” is relative in the Southern Alps.
Loose rock, snow, ice, bad weather, and poor visibility can quickly transform a manageable route into a serious alpine undertaking.
⛰️ Kea Basin
Kea Basin provides one of the most accessible ways for experienced hikers to reach the alpine country beneath Mount Earnslaw.
The route begins from the Rees Valley and climbs through forest toward a beautiful subalpine tussock basin.
Earnslaw Hut sits partway along the approach.
From Kea Basin, hikers are rewarded with excellent views toward the mountain, surrounding valleys, and high ridges.
Beyond the maintained route, however, terrain becomes considerably more demanding.
Avalanches can occur in the area during any season when sufficient snow is present.
💧 Earnslaw Burn
On the southern side of the mountain lies Earnslaw Burn, one of the most spectacular valleys near Glenorchy.
A rough tramping track follows the burn through native forest toward the head of the valley.
At the upper end, the enormous ice-covered southern face of Mount Earnslaw rises above a broad alpine basin.
Waterfalls descend from hanging glaciers and snowfields thousands of feet above the valley.
The official DOC track is rough, technical, and poorly marked and is intended for experienced trampers.
River crossing and navigation skills are essential.
The route is sometimes portrayed online as an easy scenic walk, but its remoteness and difficult terrain should not be underestimated.
👀 Best Places to See Mount Earnslaw
Climbing is not required to appreciate Pikirakatahi.
Excellent views are possible from several locations around Glenorchy and the northern Lake Wakatipu region.
Queenstown–Glenorchy Road
The scenic highway beside Lake Wakatipu provides several distant views of Mount Earnslaw.
The mountain becomes increasingly prominent as travelers approach Glenorchy.
Rees Valley
The Rees Valley offers dramatic perspectives of the eastern side of the massif.
Kea Basin
The Kea Basin Track leads experienced walkers into subalpine terrain immediately beneath the mountain.
Earnslaw Burn
The upper Earnslaw Burn provides one of the mountain’s most spectacular perspectives, dominated by hanging glaciers and waterfalls.
Invincible Mine Track
The historic Invincible Mine Track provides broad views across the Rees Valley toward Mount Earnslaw.
🌤️ Weather
Weather around Mount Earnslaw can change exceptionally quickly.
Moist air arriving from the Tasman Sea is forced upward as it reaches the Southern Alps.
This produces substantial precipitation at higher elevations.
Depending on the season and elevation, visitors may encounter:
- Heavy rain
- Snow
- Strong winds
- Sudden cloud
- Rapid temperature changes
- Whiteout conditions
- Intense sunshine between storms
The western side of the mountains generally receives considerably more precipitation than the interior valleys farther east.
Mountaineers should never assume that fine weather around Glenorchy will continue at higher elevations.
⚠️ Climbing Hazards
Mount Earnslaw presents many of the hazards typical of the Southern Alps.
These include:
- Avalanches
- Glacier crevasses
- Rockfall
- Loose schist
- Hard snow and ice
- Sudden storms
- Whiteout conditions
- Strong winds
- Hypothermia
- Navigation errors
- River crossings
- Difficult rescue access
Weather and snow conditions should always be checked before entering alpine terrain.
Because many approaches travel through relatively remote country, parties should also carry adequate emergency equipment and navigation tools.
🌿 Flora and Fauna
The Mount Earnslaw region contains a remarkable range of habitats.
Visitors traveling from the river valleys toward the summit can move from lush native forest through shrublands and tussock grasslands before eventually reaching barren alpine rock, snow, and ice.
🌱 Flora
Beech forest dominates many lower slopes within Mount Aspiring National Park.
Species found in the wider region include:
- Silver beech
- Mountain beech
- Red beech
- Ribbonwood
- Mānuka
- Ferns
- Mosses
Conditions change rapidly above the forest.
At higher elevations, vegetation transitions into:
- Subalpine shrublands
- Snow tussock grasslands
- Mountain buttercups
- Alpine daisies
- Speargrass
- Cushion plants
- Fell-field communities
These plants must survive freezing temperatures, intense ultraviolet radiation, powerful winds, heavy snowfall, and a very short growing season.
Near the highest parts of Mount Earnslaw, conditions become too severe for significant plant growth.
Rock, snow, and glacier ice dominate the summit environment.
🦜 Fauna
Mount Aspiring National Park protects important habitat for numerous native birds.
Species occurring within the wider Earnslaw region include:
- Kea
- Rock wren / pīwauwau
- Rifleman / titipounamu
- Bellbird / korimako
- South Island robin / kakaruai
- Tomtit / miromiro
- Yellow-crowned parakeet / kākāriki
- Mohua / yellowhead
- Fantail / pīwakawaka
- New Zealand pigeon / kererū
- Whio / blue duck
- Paradise shelduck / pūtakitaki
The kea is particularly associated with alpine environments.
These intelligent mountain parrots frequently investigate packs, tents, boots, and other unfamiliar objects.
The threatened rock wren / pīwauwau lives at even higher elevations among boulder fields and alpine slopes.
Native long-tailed bats may also occur in forested areas of Mount Aspiring National Park.
Introduced mammals such as red deer and chamois are present and can affect native vegetation.
🌲 Mount Aspiring National Park
Mount Earnslaw lies within Mount Aspiring National Park, one of New Zealand’s great wilderness reserves.
The park protects landscapes ranging from river valleys and beech forests to glaciers and high alpine summits.
Its best-known mountain is Mount Aspiring / Tititea, but Pikirakatahi is one of the park’s most significant southern peaks.
The park forms part of the larger Te Wāhipounamu – South West New Zealand World Heritage Area.
This UNESCO-listed region also includes:
- Aoraki/Mount Cook National Park
- Westland Tai Poutini National Park
- Fiordland National Park
Together, they protect one of the most spectacular temperate wilderness regions on Earth.
🌊 Rees and Dart Valleys
Mount Earnslaw rises between the Rees and Dart river systems, both of which drain toward Lake Wakatipu.
The Rees River flows south through a wide glacial valley east of the mountain.
The Dart River / Te Awa Whakatipu drains an even larger wilderness area to the west.
Both valleys were heavily shaped by ancient glaciers.
Today they contain broad river flats, braided channels, beech forest, wetlands, and dramatic views of surrounding peaks.
The well-known Rees–Dart Track explores this wider mountain landscape.
💎 Pounamu and the Mountain Landscape
The Ngāi Tahu connection to Pikirakatahi is inseparable from pounamu, or New Zealand greenstone.
Pounamu was—and remains—an extraordinarily important taonga.
It was fashioned into:
- Tools
- Weapons
- Adornments
- Ceremonial objects
Traditional journeys to obtain greenstone required crossing difficult mountain terrain.
Pikirakatahi stood as an important landmark and guardian over these resources.
The mountain therefore represents not simply a dramatic physical feature but part of a cultural landscape shaped by generations of travel, resource gathering, whakapapa, and tradition.
🌎 Nearby Mountains
Mount Earnslaw lies within an exceptional concentration of Southern Alps peaks.
Mount Aspiring / Tititea
Mount Aspiring rises to more than 3,000 meters northeast of Mount Earnslaw and is its nearest higher neighbor.
Mount Sefton
Mount Sefton lies considerably farther northeast near the Aoraki / Mount Cook region and is another heavily glaciated Southern Alps peak.
Aoraki / Mount Cook
Aoraki / Mount Cook is New Zealand’s highest mountain and dominates the central portion of the Southern Alps.
Together these peaks illustrate the extraordinary variety of landscapes found along the Southern Alps / Kā Tiritiri o te Moana.
💡 Interesting Facts About Mount Earnslaw
- Mount Earnslaw’s Māori name is Pikirakatahi.
- The mountain has two principal summits.
- The East Peak reaches approximately 2,830 meters.
- The West Peak reaches approximately 2,820 meters.
- The twin summits are among the highest peaks in Otago.
- Mount Earnslaw has approximately 1,359 meters of topographic prominence.
- Its nearest higher neighbor is Mount Aspiring / Tititea.
- The mountain is composed largely of schist.
- Harry Birley completed the first ascent of the East Peak in 1890.
- The West Peak was not climbed until 1914.
- Pikirakatahi is closely associated with Ngāi Tahu traditions concerning pounamu.
- The mountain has legal recognition as a Tōpuni.
- Earnslaw Burn provides spectacular views of the mountain’s southern glaciers.
- The mountain stands between the Rees and Dart river valleys.
- It lies within Mount Aspiring National Park.
❓ Frequently Asked Questions
How high is Mount Earnslaw?
The highest point, Mount Earnslaw’s East Peak, reaches approximately 2,830 meters (9,285 feet).
What is the Māori name for Mount Earnslaw?
The Māori name is Pikirakatahi. The mountain is culturally and spiritually significant to Ngāi Tahu and is recognized as a Tōpuni.
Where is Mount Earnslaw?
Mount Earnslaw lies approximately 25 kilometers north of Glenorchy on New Zealand’s South Island, between the Rees and Dart valleys.
What mountain range is Mount Earnslaw in?
It belongs to the Forbes Mountains, part of the Southern Alps / Kā Tiritiri o te Moana.
What is Mount Earnslaw’s nearest higher neighbor?
The nearest higher mountain is Mount Aspiring / Tititea, approximately 36 kilometers northeast.
When was Mount Earnslaw first climbed?
Harry Birley completed the first recorded ascent of the East Peak on March 16, 1890.
Who first climbed Mount Earnslaw’s West Peak?
H. F. Wright and J. Robertson made the first recorded ascent of the West Peak on February 6, 1914.
Can you hike to the summit of Mount Earnslaw?
Mount Earnslaw’s summit is a mountaineering objective rather than an ordinary hike. Reaching the summit can require snow, ice, glacier, navigation, and alpine climbing skills.
Can you hike to Earnslaw Burn?
Yes, but the DOC Earnslaw Burn Track is a rough, technical route intended for experienced trampers. It requires navigation and river-crossing skills and should not be confused with an easy maintained walking track.
🔗 Related Articles
📚 Sources
- New Zealand Alpine Club ClimbNZ — Mount Earnslaw / Pikirakatahi East Peak
- New Zealand Alpine Club ClimbNZ — Mount Earnslaw / Pikirakatahi West Peak
- Department of Conservation — Rees-Dart Track and Pikirakatahi
- Department of Conservation — Earnslaw Burn Track
- Department of Conservation — Kea Basin Track
- Department of Conservation — Mount Aspiring National Park
- New Zealand Legislation — Tōpuni for Pikirakatahi (Mount Earnslaw)
- New Zealand Legislation — Statutory Acknowledgement for Pikirakatahi
- Peakbagger — Mount Earnslaw
- Te Ara — Mount Earnslaw
- Papers Past — The First Ascent to the Summit of Mount Earnslaw
