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DEVIL’S MARBLES
The Karlu Karlu boulders are also known as
the Devil’s Marbles. You might wonder who,
or what, had the strength to roll them into
place. The truth is that they’re all that’s left
from the erosion, or natural wearing away,
of the rock and earth that surrounded them.US_072-073_Puzzling_boulders.indd 73 12/09/2018 15:50