To make a mountain out of modeling clay, a mound of clay should be shaped with the hands so that the mountain is about 4 inches in height and completely flat on the bottom. The mountain may be anchored to a piece of cardboard using toothpicks.
When the mountain is created, it can be given an uneven shape or it may be designed as a symmetrical structure. Two toothpicks are pushed through the clay at the center of the mountain, so that it can be attached to the cardboard. The toothpicks are then pressed into the cardboard to attach the mountain. The mountain should be given time to harden.