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
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.
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.
Parks and Wildlife Service NT - Devils Marbles
In addition to our listed
online travel guide information, contact the local tourism visitor centre for
your destination for more attractions, tours, local maps and other information.