This collection of gigantic granite boulders, have over the many millions of years been rounded into oval and spherical shapes, some precariously balanced on top of one another. These ‘marbles’ are found in scattered heaps across the wide, shallow valley that make up the 1,802 ha Devils Marbles Conservation Reserve.

Karlu Karlu is located on a sacred ‘Dreaming’ site, of which the Kaytetye say the boulders are ‘the eggs of the rainbow serpent, who passed through the area in the Dreamtime’. The majority of the Reserve is recognised as of great cultural importance to the Warrumungu, Kaiditch, Wogaia and Alyawarre people. Many stories and traditions are associated to the area.

The marbles were formed from an upsurge of molten rock that cooled and became solid beneath a layer of sandstone. The solidifying granite caused vertical and horizontal fractures, creating rectangular blocks, which over time due to the action of water, wind and sand rounded the boulder to what we see today.

The large numbers of granite boulders offer refuges and sheltered environments for the local flora and fauna, such as the native Rock Fig and the Fairy Martins (you can see clusters of bottle-shaped mud nests attached from the underside of the overhanging boulders. You may also catch sight of the small Black-headed Goanna (Varanus tristis) and the larger Sand Goanna (Varanus gouldii). Flocks of birds including the Zebra and Painted Finches are also found in the Reserve.

Access
The Devils Marbles Conservation Reserve extends along both sides of the Stuart Highway, with the nearest service town being Wauchope 9 km to the south and Tennant Creek 114 km in the north.

Source: Parks and Wildlife Service NT - Devils Marbles

For additional information contact the visitor centres at: