If this isn't the mishmash collection that somehow hangs together, I don't know what is.
All loosely in the 'earth' and 'geo' category we have some shaley rocks captured in South Australia's stunning Painted Desert; a rosey granite rock face from deep in the Flinders Ranges, also South Australia; some Lake Eyre salt pan close-ups and a rock details from the Pilbara, by Henry.
