A similar technique to using topo maps cut on the topo lines and layered -- Cut out pieces of foam board to the topo lines on the map and layer them. It gives a much greater depth. You could do this with the map pieces glued on top or paint it in whatever way would best put your message across. A promoter for a ski project displayed this type of model in a local mall when he was trying to get support. The model was somewhere around eight by ten feet. Although it all looked like terraces, it had a lot of impact and gave a good idea of the lay of land for the ski slopes, etc. Dick Morris, Board Member and Volunteer Museum of Alaska Transportation and Industry