I recall a tutorial from the Dundjinni forums on how to create chunks of cliff material/rock formations using Photoshop. The technique was fairly simple: acquire a black and white rock template, overlay your desired texture, then cut and paste a selection with a feathered lasso. However, what I'm missing is the black and white rock template that was included in the tutorial. It was the only template I ever used for rock formations, and now that I'm on a new PC, I've lost access to it with the fall of Dundjinni.

Does anyone know the tutorial/template to which I'm referring? If not, does anyone have similar rock templates that can be overlaid with other textures? I've tried setting other rock textures to grayscale, but in order to overlay correctly, the rocks must be white with black outlines, not gray.