Today’s formation appears to be hanging. Here we start seeing many rimstone formations. Rim stones form when the water laying on the surface does not reach high levels of oversaturation, not allowing calcium carbonate to seat over the pavement surface. However, if the movement of water becomes wavy rather than flat, oversaturation happens in specific areas forming the rims, which contain the water. The inclinations of the rocky surface gives a decreasing aspect to the rimstone formations. The shape of rimstones can vary according to the different sources of water. In San Giovanni’s cave, the supply of water is heavy and fast, giving the rimstone a more regular and simple shape.