I got the idea for this shortly after finishing the cancer wallpaper. It’s not what you’d normally think of as an abyss but that’s what I thought of as I made it (and I really couldn’t think of a title more suitable).
http://www.deviantart.com/deviation/51136834/
Modelled in Blender3D
Rendered with Indigo, took 8 hours 
Post-pro in PS CS2