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| Western
Australia
(Far North - Kimberleys)
Bungle Bungles National Park |
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In one of the remotest corners of Australia stand the Bungle Bungle Ranges, a series of mushroom-shaped domes formed from alternating layers of coloured sandstone. The ranges were originally part of the seabed of an ancient sea. Over millions of years, the seabed was forced upwards to form a cake-like block which then split under further upward movement. The forces of wind and water began to carve the fissured plateau into isolated segments. Eventually, the formation was eroded and smoothed into the present-day Bungle Bungle Ranges. The horizontal stripes are caused by lichen, which encrusted alternate layers of the orange rock. The ranges and the surrounding Kimberley Plateau are home to desert- and oasis-dwelling creatures, including the lilac-crowned wren, which is one of the rarest birds in Australia. Since the Bungle Bungle Ranges are fragile and easily damaged, they are now protected by law from climbers and souvenir gatherers. The northwest corner of the Bungle Bungle region was made a national park in 1987. The isolated Bungle Bungle Ranges stand inland, away from the coast and major rivers. They were once almost inaccessible because of the rugged, inhospitable terrain of the Kimberley Plateau, but a major highway was completed through the region in 1986. Now tour groups regularly delve into the territory, which until recently was known only to the resident Kija Aborigines and a few ranchers and explorers. |
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Native rock paintings, which are thousands of years old, adorn cliff faces and overhanging rocks in the region, attesting to the importance the range must have had for the indigenous people. Aboriginal lore tells of characters such as the giant Rainbow Serpent creator who was responsible for making mountains and valleys. Legend and reality are intertwined in the Bungle Bungle Ranges, an unearthly corner of the Australian Outback. Geology |
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| Virtually every visitor
to Purnululu asks the same question - how did this remarkable landscape
come about? The distinctive beehive-shaped towers of the Bungle Bungle are
made up of sandstones (rocks formed by the consolidation of sand grains)
and conglomerates (rocks composed mainly of pebbles and boulders and
cemented together by finer material). These sedimentary formations were
deposited into the Ord Basin 375 to 350 million years ago, when active
faults were altering the landscape.
To the north of what is now the Bungle Bungle Range, uplift occurred along the Osmond Fault to create the Osmond Range, and to the west took place along the Halls Creek Fault. Streams and rivers eroded these ancient highlands and at their edges slopes were steep and the energy in the streams and rivers was high, allowing them to carry large boulders and dump them at the foot of the scarp. Such boulder conglomerates can today be seen in the walls of Echidna Chasm. Most of the rocks in the Bungle Bungle Range, however, were formed from sand deposited further from the highlands by lower-energy braided rivers flowing across broad plains in open valleys. As more sand accumulated, the older channels consolidated to form sandstone. The distinctive beehive-shaped landforms seen today have been produced by uplift and erosion during the last 20 million years. Contrary to its solid appearance, the sandstone is extremely fragile. The weight of overlying rock holds the sand grains in place, but when this is removed, the sandstones are easily eroded and the rounded tops reflect this lack of internal strength. Water flowing over the surface will exploit any weaknesses or irregularities in the rock, such as cracks or joints, and rapidly erodes the narrow channels that separate the towers. Geological features |
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| One of the most obvious
features of the sandstones is the alternating orange and black or grey
banding. The darker bands are on the more permeable layers of rock (which
means water is able to move through them with relative ease). They allow
moisture to seep through to the rock surface, promoting a dark algal
growth.
The less permeable layers in between are covered with a patina of iron and manganese staining, creating the orange bands. These outer coatings (the rock beneath is a whitish colour) help to protect the lower parts of the towers from erosion. About 250 million years ago, after the area was uplifted, a meteorite hit just north-east of Piccaninny Creek. All that remains today is a 10 kilometre circular structure on top of the Range. The same erosional forces that produced the Bungle Bungle and its sandstone towers have removed the crater. A range of attractions |
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| While the geology of the
Bungle Bungle is indeed significant, the area's cultural and ecological
importance should not be forgotten. The area is rich in Aboriginal art and
there are also many burial sites. The Warmun Aboriginal Camp was
re-established in the area several years ago and the Aboriginal
traditional owners make a valuable contribution to the management of the
park. The Department of Conservation and Land Management has
responsibility for the day-to-day operation of the park. More than 130
bird species are the park's most visible animals, including rainbow
bee-eaters and flocks of budgerigars. The nailtail wallaby and euro live
around the massif, while the short-eared rock-wallaby and euro are thought
to live on top. Several species of rare animals also occur in the park.
Purnululu attracts visitors for a whole range of reasons.
THINGS YOU NEED TO KNOW |
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| Where is it? The turn-off to the park is 250 km south of Kununurra or 109 km north of Halls Creek. The park access road is accessible only to four-wheel-drive vehicles. (Click on map for large image) Travelling time: Facilities What to see and do
Nearest CALM Office Practicalities |
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| The
fly-drive tours available in Halls Creek and Kununurra, which
involve flying to the park’s airstrip and then being driven around in a
4WD, offer the best of both worlds, and the half-hour helicopter
flights ($160) available in the park get right into the gorges and
will leave you grinning for hours – if you’ve ever wanted to fly in a
chopper, save your money for the Bungles, you will not be disappointed.
Helicopter flights are also available from Turkey Creek and Kununurra.
From the highway it’s a rough 55-kilometre, two-hour, 4WD journey to the ranger’s residence (tel 08/9168 7300), where the entry fee must be paid in return for a map. From here you can go to either of the two basic camps in the park. Kurrajong Camp is 10km to the north and gives access to Echidna Chasm, a one-hour return walk into a slender chasm a thousand metres long and half as high. Frog Hole is another, wider chasm with a pool at the end, while Mini Palms involves squeezing into yet another narrow gorge to a cave at the end, as part of a walk that takes at least two hours – take plenty of water and a torch. At any point on these walks you can look up and see palms clinging to the rock walls hundreds of metres above you; the scale of the clefts is underlined when you realize the palms can be up to 20m high. Wilardi Camp (25km from the ranger’s residence) is where tour groups stay. From here a track leads on to a cleared patch of ground used as a car park on the south flank of the plateau, site of the striped domes for which the Bungles are best known. The weathered, beehive-like domes have horizontal bands of silica (orange) and lichen (grey), together forming a fragile crust over the powdery interior, and are a most unusual sight. From here a half-hour walk leads into Cathedral Gorge, a huge overhanging amphitheatre with a seasonal pool whose rippled reflections flicker across the roof above. Piccaninny Gorge is a hard, thirty-kilometre return walk for which you’ll need large quantities of water. The ground underfoot is soft sand and shade is negligible during the day. Although there is a pool near the end, if you plan to walk up the gorge, leave very early in the morning and turn back long before your water runs out. There is an emergency hand-pump close to the car park. |
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