Over the following millions of years erosion did what it always does: it wore away the edges. That one block of granite then developed horizontal and vertical cracks and split into many rectangular blocks. How did they end up that way? The Devils Marbles started out, many million years ago, when an upsurge of molten rock reached the surface, spread out and settled into a solid layer. ![]() Many of them seem impossibly balanced on top of each other, just like the two marbles in the famous picture. The Devils Marbles - or Karlu Karlu as they are known by the local Warumungu Aboriginals - are a collection of huge, red, rounded granite boulders.Īctually, they vary in size, from 50 cm up to six metres across, and they are strewn across a large area. Return to top What are the Devils Marbles and how were they formed? In fact, if all you want is that one picture then you don't even have to get out of your car.īut I hope you will get out of your car, because that's the only way to appreciate the beauty of this unusual area. You don't have to go out of your way to see the Marbles. ![]() On top of that the highway cuts right through the reserve. There isn't much else to look at on the long drive. Since the Stuart Highway between Darwin/Katherine and Alice Springs is a popular tourist drive the Devils Marbles are a popular place. In other words, in the middle of nowhere. Ok, the Devils Marbles are 393 km north of Alice Springs and 760 km south of Katherine. The Devils Marbles Conservation Reserve is located 110 km south of Tennant Creek, in the Northern Territory of Australia. What are they and how were they formed?.Well, there's a bit more to this area than two red rocks. Of course! You never see anything else but that one famous picture, and there's rarely any useful information with it. When she explained why she was so surprised it dawned on me. Until my friend stood there in the reserve with an open mouth and went "wow!" That people might think of the Marbles as just those two huge rocks had never crossed my mind.
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