This scene emerged from grappling with Linda's Shroom .tgd, using Frank's hint that the displacements could be applied to the Crater shader (although I must say, it took a lot of tweaking to get something that didn't break up)
Other Credits: Chris Stein (Ogre) for the wonderfully detailed G'Quan heavy cruiser model, available at Ashundar
inkydigit, for the brass shader clip file (in File Sharing).