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Wombeyan Creek exits its underground passage under Victoria Arch in the Karst Conservation Reserve, NSW, aka Wombeyan Caves. This was my first trip here, a reconnoitre of sorts.

I wasn't happy with the processing of the original RAW file, so I worked on the original TIFF copy in Colour Efex Pro 4. Why Colour Efex and not Silver Efex? Well the RAW file was shot with an Infrared DSLR (a converted Canon EOS 10D) and for some reason I can get more out of the data with Colour Efex.

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