This is one of over 4989 textures generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
With Filter Forge, you can:
To open this filter, you must have Filter Forge 2.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
This uses a Lua script to create a Ribbon which then can be used where you need Roads or Rivers or Rainbows
Lua, Ribbon, Roads, Rivers, Rainbows