Our group at the natural phenomenon, the Devil's Marbles, 100 kilometres south of Tennant Creek.

An excellent example of spheroidal weathering. Most of the shaping took place underground, and was completed by further natural weathering after the surrounding loose sands were blown or washed away, leaving the boulders exposed to the elements.

This is a Dreaming Place of the Watamungu, who believe that they are eggs laid by the Rainbow Serpent.

Now, how did that get there?.......

Someone must have had a very sharp knife!

Calcified large toadstool?

Our intrepid photographer - still at it......!