This cake was for my son's 3rd birthday party. He wanted "Percy" from Thomas the Tank Engine and penguins on his cake so I decided on making a polar exhibition at the zoo to cover both. The train and animals are made from fondant. The train tracks are made from gingerbread. The frosting on the top layer is buttercream with oreo crumbs to give a rocky look. The cake is chocolate with cookies and cream filling.