The Devils Marbles are clusters of mysterious rocks and boulders located in the scenic Australian desert near the outback town of Tennant Creek. While some are precariously balanced, others seem cut with a knife, the action of heat, differences in temperature from day to night and erosion. The local Aboriginal people believe that the boulders are the eggs of the Rainbow Serpent. The ancient Aboriginal mythology surrounding this fascinating geological marvel can be explored through a short self guided walking trail and informative signage.