This is one of over 4988 textures generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
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To open this filter, you must have Filter Forge 1.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
I wanted to see how much could be made from one perlin noise, but it seems that in this case, two noises were needed to speed it up. I made it to simulate weird cliff landscapes.
alien cliff weird landscape gorge ravine river