Made this for my neice's 5th Birthday. The bottom rocky layer is chocolate, the top two are pound cake. Covered in fondant. Made the turrets from empty wrapping paper rolls, covered in gumpaste. painted with gels and powder food coloring. Lots of luster dust! Bottom layer is 9x13, middle is 8" and top is 4". I got this idea from CakesUnleashed, thanks for posting such an awesome cake!!