This was one of my favorite cakes to do! If I recall correctly it was an 8 and 6 inch rounds, stacked, and shaped, then I used a small (about 4in) "bundt" cake for the top. Placed a small votive candle holder in the top, iced the cake in chocolate fudge, with red, orange and yellow "lava" down the sides. Crumbled cake trimmings, and made green leaves at the bottom. Then I put a few small pieces of dry ice in the votive holder, and added a few driops of warm water, and VOILA! Smoking Volcano! The kids LOVED it!!