My nephew turned 5 years old and this is the cake that my sister-in-law and I made. The volcano was shaped and then covered in chocolate frosting and then we added crushed oreo "lava rocks". The lava is colored piping gel, and so is the pond water. We made the trees from royal icing leaves and pretzel sticks. Five little dinosaurs and 5 little trees were the perfect touch for a 5-year-old birthday party!