Dînadan:
Spotted this over on BoW:
http://www.beastsofwar.com/backstage/hobby-lab-flat-pack-travel-rock/comment-page-2/#comments
(Nb you need a backstage account to watch it)
It’s a tutorial for making some really nice looking rocky outcrop terrain that can flat pack for storage/transport. For CD themed ones you could just leave off the flock stage and add lava instead and possibly use darker greys to paint them. Most surprising thing is what they’re made out of - car wash sponges; would never have thought to use those for terrain.