That pic was contributed by low orbit in the "Aircraft bent at El Questro" thread. Apparently its at Katchana in the Kimberly, WA. Will have to check the country airstrip guide at work tomorrow to see if it rates a mention.
Here is another one I saw a few years ago, about 500m, dip in middle, dune at one end, the drink at the other and a few good coral buondies to test the undercarriage. Again in WA at the Abrolhos islands, there were two other strips that where shorter and rougher, but don't have any pics.
That didn't seem to work, might be size of image file. Will try again later.