The Most Remarkable Rock Formations in Oceania
12 places in 2 countries · updated 14 October 2026
In short: By our ranking, the most remarkable rock formations in Oceania are Uluru (Australia), Three Sisters (Blue Mountains) (Australia) and Moeraki Boulders / Kaihinaki (New Zealand). The list covers 12 rock formations in 2 countries. Australia has the most, with 6. Last updated 14 October 2026.
Oceania pairs two opposite kinds of rock country. Australia is one of the oldest and most stable landmasses on Earth, and hundreds of millions of years of weathering in a mostly dry climate have left monoliths, granite domes and fields of pillars standing on flat plains. New Zealand is young and restless, pushed up along an active plate boundary, so its rock formations are fresh cuts made by sea, rivers and rain in limestone, mudstone and gravel. Between them they show both ends of geological time.
Uluru rises abruptly from the plains of central Australia, a single mass of sandstone that glows red at the edges of the day and is sacred to the Aṉangu people. At Karlu Karlu, granite has weathered into huge rounded boulders balanced on one another, and Wave Rock in Western Australia is a granite cliff curved like a breaking wave. The Pinnacles Desert in Nambung National Park is scattered with thousands of limestone pillars rising from yellow sand. In the Blue Mountains, the Three Sisters are sandstone columns standing above a forested valley, and the Totem Pole off Tasmania's Tasman Peninsula is a slender dolerite column rising straight from the sea.
New Zealand's set begins with the Moeraki Boulders, near-perfect spheres scattered along a beach in Otago. At Punakaiki, the Pancake Rocks are limestone stacks layered like a pile of pancakes, with blowholes that roar at high tide. The Ōpārara Arch carries the forest across a river in Kahurangi National Park, and the Pūtangirua Pinnacles in the Wairarapa are eroded gravel pillars that served as the Paths of the Dead in The Lord of the Rings.
In this list
| # | Place | Type | Country | UNESCO |
|---|---|---|---|---|
| 1 | Uluru | Rock formation | Australia | |
| 2 | Three Sisters (Blue Mountains) | Rock formation | Australia | |
| 3 | Moeraki Boulders / Kaihinaki | Rock formation | New Zealand | |
| 4 | Pancake Rocks | Rock formation | New Zealand | |
| 5 | Pinnacles Desert | Rock formation | Australia | |
| 6 | Castle Hill | Rock formation | New Zealand | |
| 7 | Karlu Karlu / Devils Marbles Conservation Reserve | Rock formation | Australia | |
| 8 | Wave Rock | Rock formation | Australia | |
| 9 | Ōpārara Arch | Natural arch | New Zealand | |
| 10 | Totem Pole, Tasmania | Stack | Australia | |
| 11 | Mount Sunday | Rock formation | New Zealand | |
| 12 | Pūtangirua Pinnacles | Rock formation | New Zealand |
01 Uluru
Australia25.345° S 131.036° E
Image by Walkerssk from Pixabay For the Aṉangu, the Pitjantjatjara and Yankunytjatjara people of the area, Uluru is not scenery but law. Its caves, waterholes and rock art are tied to Tjukurpa, the body of ancestral stories that governs land and conduct. Some sections of the rock are linked to ceremonies restricted to men or to women, and visitors are asked not to photograph them. European explorers reached the area in the 1870s. William Gosse named the rock Ayers Rock in 1873 after the Chief Secretary of South Australia. In 1993 it became the Northern Territory's first dual-named feature, and since 2002 the official order has been Uluru / Ayers Rock.
Did you know? The sand that became Uluru was eroded from granite mountains to the south, the ancestors of today's Musgrave, Mann and Petermann Ranges.
02 Three Sisters (Blue Mountains)
Three Sisters
Australia · 3.2 km from Katoomba33.736° S 150.314° E
Image by anncapictures from Pixabay They are what erosion leaves behind. The Blue Mountains are a raised plateau of Triassic sandstone, and wind, rain and rivers have been cutting it back for millions of years; the Sisters are fragments of the escarpment isolated as the cliff retreated, standing free above the valley.
Did you know? Chief Ranger Jim McKay proposed the Giant Stairway in 1914, but work begun in 1916 stopped a quarter of the way down because cutting steps proved too costly.
03 Moeraki Boulders / Kaihinaki
New Zealand · 29.4 km from Oamaru45.345° S 170.826° E
Image by Simon from Pixabay What looks like the work of a sculptor is the work of chemistry. The boulders are septarian concretions: balls of mud, fine silt and clay that were cemented by calcite while they lay in the soft sediment of the sea floor during the Palaeocene, around 60 million years ago. Because calcium spread into them evenly from all sides, they grew into near-perfect spheres; the largest, around two metres across, are thought to have taken several million years to form. Later, cracks — the septaria — opened inside them and slowly filled with brown and then yellow calcite, which is what gives the weathered surfaces their tortoiseshell pattern.
Did you know? The calcite cement makes up only about 10 to 20 percent of the outer rim even in the larger boulders; the rest is mud, silt and clay.
04 Pancake Rocks
New Zealand42.117° S 171.327° E
Image by Makalu from Pixabay The limestone began as shell debris on the floor of a warm, shallow sea in the Oligocene, around 30 to 22 million years ago, when most of the continent of Zealandia lay underwater. Buried under later sand and mud, it was compacted and cemented into rock, then lifted above the sea by the same crustal movements that raised the Southern Alps. The pancake effect comes from a process called stylobedding: under great pressure, impurities in the limestone gathered into thin horizontal planes, producing alternating bands of hard limestone and softer, mud-rich rock. Rain, wind and salt spray wear away the weak bands faster, so the stronger layers stand out like a stack of crêpes.
Did you know? The limestone is almost pure calcium carbonate, built from the shells of countless sea creatures that once thrived off a cluster of low islands.
05 Pinnacles Desert
The Pinnacles
Australia30.606° S 115.157° E
Image by Redkite from Pixabay The pillars are made of Tamala Limestone, a rock built ultimately from seashells: shell fragments broken up by the sea were blown inland as sand and cemented into limestone dunes. How exactly the pinnacles formed is still argued over. One idea is that rainwater dissolved the limestone unevenly, leaving harder columns standing as the softer rock and sand were removed; another is that they preserve the casts of trees buried in the dunes; a third points to plant roots concentrating calcium into hard crusts. Whatever the cause, the shifting sand keeps covering and uncovering them.
Did you know? Many pillars show cross-bedding, layered lines that record sudden shifts in the prevailing wind while the original dunes were piling up.
06 Castle Hill
New Zealand43.229° S 171.716° E
Michal Klajban · CC BY-SA 4.0 The stone was laid down on the floor of a shallow sea some 30 to 40 million years ago, when much of what is now New Zealand lay underwater. Later uplift raised the limestone into the mountains, and rain, frost and wind have since carved it into rounded towers, fins and overhangs. The result sits at around 700 metres, framed by the Torlesse and Craigieburn ranges, with tussock grassland running between the rocks. The same limestone was quarried for the front of ChristChurch Cathedral in Christchurch.
Did you know? Ngāi Tahu know the area as Kura Tāwhiti, usually translated as "treasure from a distant land".
07 Karlu Karlu / Devils Marbles Conservation Reserve
Australia20.567° S 134.267° E
Iain Whyte ( Iainwhyte ) · CC BY-SA 2.5 The boulders are the exposed top of a large body of granite that formed underground and was later lifted and laid bare. Cracks split the granite into rough rectangular blocks, and over immense spans of time those blocks were rounded off by weathering. Desert extremes play a big part: the rock heats strongly by day and cools at night, and thin outer shells flake away like the skin of an onion, a process called exfoliation.
Did you know? That boulder turned out to come from an Aboriginal women's sacred site, and after more than 45 years of negotiation it was returned on 4 September 1999.
More about Karlu Karlu / Devils Marbles Conservation Reserve →
08 Wave Rock
Australia32.444° S 118.898° E
DaHuzyBru · CC BY-SA 4.0 The overhang is a textbook "flared slope". Geologists read it as a shape made underground: the curve was weathered into the granite while it was still buried beneath a laterite-capped land surface, a process that began in the Cretaceous, more than 100 million years ago. When the land later lifted and tilted after Australia separated from Antarctica, erosion stripped the soft cover away and exposed the undercut face as a clean concave curve.
Did you know? Mulka's Cave, about 15 km north of Wave Rock, holds over 450 hand stencils, handprints and painted images, while most rock-art sites in the region have fewer than 30.
09 Ōpārara Arch
New Zealand41.145° S 172.188° E
Stewart Nimmo · CC BY-SA 4.0 The arch lies in the Ōpārara Basin on the edge of Kahurangi National Park. Here a granite basement some 350 million years old is overlain by a relatively thin layer of limestone deposited around 35 million years ago. Rainfall of up to six metres a year, together with the roots of the dense beech and podocarp forest, has dissolved and broken that limestone into a karst landscape of caves, gorges and arches. The walking track follows the river upstream to a viewpoint high inside the arch, from which both entrances and the river below are visible, and where stalactites and stalagmites are beginning to form.
Did you know? Some intact bird skeletons recovered from the basin's limestone caves are more than 20,000 years old, preserved by steady cave temperatures and the chemistry of the rock.
10 Totem Pole, Tasmania
Totem Pole
Australia43.139° S 148.006° E
Ed Dunens · CC BY 2.0 The stack belongs to the dolerite coast of Tasman National Park, proclaimed in 1999, where columnar cliffs rise to around 300 metres above the sea and rank among the highest of their kind in the world. Dolerite is a volcanic rock that cooled slowly from molten magma, contracting into tall, many-sided columns; the sea, wind and salt have worked along these joints, isolating columns from the cliff until one stood alone. Cape Hauy, Cape Pillar and the Tasman Arch are all part of the same coastline.
Did you know? After Lynn Hill's fall on a broken hold, the first onsight ascent of the stack was made a few years later by Monique Forestier.
11 Mount Sunday
New Zealand43.548° S 170.893° E
Jeff Hitchcock from Vancouver, BC, Canada · CC BY 2.0 The hill is a roche moutonnée, a landform shaped by ice. During the Pleistocene the Rangitata Glacier repeatedly flowed down this valley, grinding smooth the upstream side of the rock and plucking away the downstream side, which is why Mount Sunday is gentle on one flank and steep and craggy on its south-eastern face. The glaciers had pulled back into the headwaters of the Clyde and Havelock rivers by about 15,000 years ago, leaving the knoll stranded in the middle of the valley.
Did you know? The Edoras set was dismantled after filming in 1999 and the hill was returned to its natural state.
12 Pūtangirua Pinnacles
New Zealand · 39.1 km from Upper Hutt41.447° S 175.246° E
Simeon W from Wellington, New Zealand · CC BY 2.0 Their raw material is old. Some seven to nine million years ago, when sea levels were higher, the Aorangi Range stood as an island, and rivers draining it built broad alluvial fans along its southern shore. The land was later drowned again, and only after the ice ages, as the sea fell back, were these fans of gravel exposed. Rain and wind have since been eating into the poorly cemented conglomerate; where a harder cap of cemented silt or stone protects the material beneath, a pillar survives while everything around it is washed away.
Did you know? After the horses were filmed from a helicopter, the crew raked over their hoof prints to leave no trace on the ground.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented — the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What are the most remarkable rock formations in Oceania?
- On our list, Uluru (Australia) ranks first, followed by Three Sisters (Blue Mountains) (Australia) and Moeraki Boulders / Kaihinaki (New Zealand).
- Which country has the most rock formations in Oceania?
- In our collection, the most come from Australia (6) and New Zealand (6).
- How tall is Uluru?
- Uluru rises about 348 metres above the surrounding plain, and its summit is about 863 metres above sea level. Much of the rock is thought to extend far below the ground.
- How did the Moeraki Boulders form?
- They are concretions that grew slowly in sea-floor mud around 60 million years ago, as minerals cemented the sediment around a centre. Coastal erosion of the softer mudstone cliffs has released them onto the beach.
- Why do the Pancake Rocks look layered?
- The Punakaiki rocks are limestone formed from marine shells and plant fragments, interbedded with thin, softer layers of mud. Rain, wind and sea spray wear the softer layers faster, leaving the stacked appearance; the exact process is still studied.
- How many rock formations are on this list in Oceania?
- The list covers 12 rock formations in 2 countries. Australia has the most, with 6.