Mounting Cake I Have A Project In Science, And I Need Recipes To A Cake That Looks Identical To My Volcano (Mount Etna)HELP!?

I have a project in science, and i need recipes to a cake that looks identical to my volcano (Mount Etna)HELP!? - mounting cake

http://jas.familyfun.go.com/recipefinder ...

I doubt that this is what you are looking for.
Why cake? You can eat later?
I propose the establishment of mixed clay, plaster or cement with earth and stones. Look for sites in dioramas.