I think this is the most spectacular park I have visited in Australia. It's more beautiful than Ayers Rock or the Olgas and more mysterious. For my opinion, It's equal to the Grand Canyon of Colorado.

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Located in the Kimberleys region at the north of Australia, you can go to the park by a track from Kununurra (North) or from Halls Creek (South). This can done only in dry season (from 04/01 to 12/31) and a 4WD is mandatory because the track is bumpy. Some parts of the road are difficult to pass over:

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It is famous for the sandstone domes, unusual and visually striking with their striping in alternating orange and grey bands. The banding of the domes is due to differences in clay content and porosity of the sandstone layers: the orange bands consist of oxidised iron compounds in layers that dry out too quickly for cyanobacteria to multiply; the grey bands are composed of cyanobacteria growwing on the surface of layers of sandstone where moisture accumulates.
You can either go on a hike in the middle of sandbox domes :

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or fly over the massif in the rangers' helicopter :
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Like Ayers Rock, domes create a sense of mysticism. It is difficult to conceive that it is the result of natural phenomena (sedimentation, erosion).
Be careful, the weather can be very hot, don't forget water!

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