I stacked foam in the general shape. then took wadded newspaper around the edges to make it look a little more real then I got some of the Plaster cloth that they sell at model Train stores and layed it over the foam and wadded paper. Then I just grabbed a can of Textured spray paint and paited it. Took about a day but now I have a mountain to put my Terrordrome on. Check my Pictures to see what It looked like. Its not the best but good enough for a dio pic and everyone that sees it seems to be impressed.