While this picture might look sinister, it's origin certainly isn't:

One day my wife put some cheap, leaky candles on a diner plate. As could be expected they leaked a lot more than they burnt. After some time, she needed the plate again, so, she removed the candle residue. It was one big block, as wide as the plate. When it lay upside down, I suddenly noticed its intricate texture. It reminded me of the landscape in the second Alien movie, where they have to do a landing manoevre in a narrow canyon system. Anyway, I've made a picture of it. Please feel free to use it. I think it is especially cool among Kore elements.