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Located about 100kms south of Alice Springs, Rainbow Valley features colourful sandstone bluffs and cliffs which are part of the James Range. The coloured rock bands in the sandstone cliffs were caused a long time ago by water dissolving the red iron of the sandstone layers. The red minerals formed a dark iron surface layer above the leached white layers of much softer rock below. Weathering and erosion are also responsible for other features in the valley.
The layering has produced bright colours particularly at dawn and sunset. There are some clay pans in front of the main cliffs which may fill with water from time to time

I have had a passing interest in photography for many years - mainly as a record of places I'd been to whilst bushwalking. In "my former life" as a University Professor teaching structural engineering in Australia and before that in Canada I started collecting 35mm slides of a technical nature (buildings, bridges, concrete, steel, timber etc.) that I could use in my teaching. In this role I was instrumental in the early 1990s to start collecting technical images of all aspects of structures and to start putting these images into a more pictorial "multimedia" orientated teaching environment. Much later, after retiring from Academia, I moved from 35mm slides to digital cameras. A great deal later (about 2010) I invested in a Nikon D80...