Damon Mcknight
Uluru, also known as Ayers Rock, is a large sandstone monolith located in the Uluru-Kata Tjuta National Park in the Northern Territory, Australia. It is one of the country's most famous landmarks and tourist destinations, attracting visitors from around the world. The rock formation rises 348 metres (1,142 feet) above the surrounding desert plain and reaches a height of 863 metres (2,831 feet) above sea level, with a circumference of 9.4 kilometres (5.8 miles). Uluru has a rich history and cultural significance for the Aboriginal people of the region, who have revered it for centuries.
| Characteristics | Values |
|---|---|
| Name | Uluru/Ayers Rock |
| Location | Uluru-Kata Tjuta National Park, Northern Territory, Australia |
| Height | 348 m (1,142 ft) above the surrounding desert plain |
| Height above sea level | 863 m (2,831 ft) |
| Length | 3.6 km (2.2 mi) |
| Width | 2.4 km (1.5 mi) |
| Perimeter | 9.4 km (5.8 mi) |
| Composition | Sandstone, arkosic sandstone, feldspar |
| Colour | Orange-red |
| Ownership | Aboriginals (The Australian government holds a 99-year lease) |
| Tourism | Hiking and climbing are popular activities. |
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What You'll Learn
Uluru's height and perimeter
Uluru, also known as Ayers Rock, is a large sandstone monolith in the southern part of the Northern Territory, 335 km (208 mi) southwest of Alice Springs. It is one of Australia's most recognisable natural landmarks and has been a popular destination for tourists since the late 1930s. Uluru is sacred to the Aboriginal people of the area, known as the Anangu or Pitjantjatjara.
Uluru rises 348 metres (1,142 feet) above the surrounding plain and reaches a height of 863 metres (2,831 feet) above sea level. The rock is oval in shape, measuring 2.2 miles (3.6 km) long by 1.5 miles (2.4 km) wide, with a circumference of 5.8 miles (9.4 km). Most of its bulk lies underground, and it is estimated to weigh 1,425,000,000 tonnes.
Uluru is notable for its striking orange-red hue, which is caused by the oxidation of its iron content. The rock changes colour at different times of the day and year, most notably glowing red at dawn and sunset.
Uluru is located within the Uluru-Kata Tjuta National Park, which was founded in 1950 as the 'Ayers Rock-Mount Olga National Park' and renamed in 1995. The park is jointly managed by the Aboriginal owners of the land, the Anangu, and the Australian Government, who hold a 99-year lease. The area around Uluru is home to an abundance of springs, waterholes, rock caves, and ancient paintings.
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Uluru's composition
Uluru, also known as Ayers Rock, is a large sandstone monolith. It is composed of arkosic sandstone, which contains a high proportion of feldspar. The average composition of Uluru is 50% feldspar, 25-35% quartz, and up to 25% rock fragments. The rock fragments include subrounded basalt, which has been replaced to varying degrees by chlorite and epidote. The grains are typically 2-4 mm in diameter and are angular to subangular. The finer sandstone is well-sorted, with sorting decreasing and grain size increasing.
The sandstone of Uluru was formed from sand that was deposited as part of an extensive alluvial fan extending from the ancestors of the Musgrave, Mann, and Petermann Ranges to the south and west. This sand was dumped at the bottom of the mountain range and eventually became the arkose sandstone that makes up Uluru. Over time, the centre of Australia turned into an inland sea, and a phase of deposition began in what is now known as the Amadeus Basin. The sand that would become Uluru was buried under limestone, sand, and mud, and around 400 million years ago, it changed from sediment into rock due to the extreme pressure.
Uluru's unique composition and history have made it one of Australia's most recognisable natural landmarks. The rock is known for its striking orange-red hue, which is caused by the surface oxidation of its iron content. This oxidation process gives what would otherwise be grey rock a distinctive colour. Uluru's colour varies depending on the position of the sun and the time of day, with the rock glowing red at dawn and sunset.
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Uluru's colour
Uluru, also known as Ayers Rock, is a large sandstone monolith in the southern part of the Northern Territory, 335 km (208 mi) southwest of Alice Springs. It is a sacred site for the neighbouring Aboriginal communities and is also one of Australia's most recognisable natural landmarks.
The rock is famous for its ever-changing colours, which are particularly notable at sunrise and sunset. In the mornings, as the sun begins to rise, the rock turns from a milky grey to a faded purple. As the sun gets higher in the sky, the rock glows red and then turns a golden colour, which it retains for the rest of the day. At sunset, the rock transforms from bright red and gold to a dusky pink and purple as the sun dips below the horizon.
The colour of Uluru is due to its composition of arkosic sandstone, which contains a high proportion of feldspar. The reddish hue is a result of the oxidation of iron-bearing minerals in the rock. When the rock is relatively fresh, it has a grey colour, but the weathering of these iron-bearing minerals through oxidation gives the outer surface its distinctive rusty red-brown colour.
The rock's surface is made up of valleys, ridges, and caves, which create a variety of shapes that are illuminated by the changing sunlight throughout the day. This play of light and shadow across the rock's unique topography adds to the dramatic colour shifts that occur at different times of the day and year.
The colour changes of Uluru are so remarkable that they have become a significant draw for tourists, many of whom are captivated by the opportunity to witness the rock's transformation at sunrise and sunset. The experience of witnessing these colour shifts is often described as awe-inspiring and unforgettable.
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Uluru's history
Uluru, also known as Ayers Rock, is a sacred site for the local Anangu, the Pitjantjatjara people, who have passed down the knowledge of how to care for the site over generations. The landmark was first sighted by Europeans in 1872 by explorer Ernest Giles, and the following year, in 1873, surveyor William Gosse reached Uluru and named it Ayers Rock in honour of Sir Henry Ayers, the Chief Secretary of South Australia.
In the early 1900s, the land was declared government property, which led to increased tourism and mining opportunities. The first tourists arrived in the area in 1936, and the first vehicular tracks were formed in 1948. In 1950, 'Ayes Rock National Park' was declared, and the Anangu people were discouraged from visiting the area. However, in 1964, the leases issued by the government were revoked, and many Anangu returned to the area.
In 1976, the Aboriginal Land Rights (Northern Territory) Act came into force, and the Central Land Council lodged a land rights claim on behalf of the traditional owners. The claim was successful, and the national park was handed back to the Anangu people in 1985. The Anangu leased the land for 99 years to the Australian National Parks and Wildlife Service, and a board of management was set up, with a majority of Anangu members.
Uluru is now a UNESCO World Heritage Site and is jointly managed by the Anangu and Australia's newer settlers. It is one of Australia's most recognisable natural landmarks and has been a popular tourist destination since the late 1930s. The site features ancient rock paintings and is known for its striking orange-red hue, caused by surface oxidation of its iron content. The Anangu have requested that tourists refrain from climbing Uluru out of respect for their culture and due to the climb's dangers, and in 2019, the climb was officially closed.
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Uluru's ownership
Uluru, also known as Ayers Rock, is a sacred site for the local Aboriginal people, known as the Aṉangu or Pitjantjatjara. The area surrounding the rock formation is home to an abundance of springs, waterholes, rock caves, and ancient paintings.
Uluru was first sighted by a non-Aboriginal person in 1872 by explorer Ernest Giles, who named the nearby Kata Tjuta (or Mount Olga). The following year, in 1873, surveyor William Gosse became the first non-Aboriginal person to see Uluru and named it Ayers Rock in honour of Sir Henry Ayers, the then Chief Secretary of South Australia.
In 1920, Uluru was declared an Aboriginal Reserve, commonly known as the South-Western or Petermann Reserve, by the Australian government. However, this did not prevent the exploitation of the area for tourism and mining. In 1958, the area was excised from the Petermann Reserve and became the Ayers Rock-Mount Olga National Park, with the first motel leases being granted the following year.
The Aboriginal Land Rights (Northern Territory) Act came into force in 1976, recognising Indigenous land rights and allowing Indigenous people to reclaim land and manage resources. Despite this, it took another six years of lobbying for the traditional owners, the Aṉangu people, to reclaim ownership of Uluru. On 26 October 1985, the Australian government returned the title deeds to the park to the Aṉangu in a handback ceremony, with the condition that they lease it back to the National Parks and Wildlife agency for 99 years.
Since the return of ownership to the traditional custodians, there has been an ongoing effort to balance the conservation of cultural values with the needs of visitors. The Aṉangu people consider Uluru a sacred site and have requested that tourists do not climb it. In 2019, exactly 34 years after the government returned the lands, the climb on Uluru was officially closed, and it is now illegal to attempt the ascent.
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Frequently asked questions
Ayers Rock, or Uluru, is 348 metres (1,142 feet) high, 3.6 kilometres (2.2 miles) long, and 9.4 kilometres (5.8 miles) around. It reaches 863 metres (2,831 feet) above sea level, and also extends at least 2.5 kilometres underground.
From around 900 million years ago, this part of Australia was a shallow sea and multiple layers of mineral-rich sandstone were laid on the ocean floor. About 550 million years ago, these layers hardened and formed mountains, which then gradually eroded and washed away. A second shallow ocean then inundated the area, compressing and cementing the sandstone that would become Uluru. The sea eventually receded, and the rocks folded and fractured once more. The horizontal layers of sandstone were tilted almost 90 degrees upward to their present position, eroding more slowly than surrounding softer deposits until the monolith stood high above an otherwise flat surface.
Sunrise and sunset showcase a broad contrast of colours on the rock, so these are considered the best times of day to visit.
Uluru was first sighted by Europeans in 1872, and the following year it was named Ayers Rock by surveyor William Gosse in honour of Sir Henry Ayers, the then Chief Secretary of South Australia. In 1993, a dual naming policy was adopted, and it was officially renamed "Ayers Rock / Uluru". The order of the names was reversed in 2002 at the request of the Regional Tourism Association in Alice Springs.
Uluru has long been revered by a variety of Aboriginal peoples of the region, to whom it is a sacred site. It is also one of Australia's best-known tourist destinations, attracting over 400,000 visitors annually as of 2000.
