1. Sculpture refers to a type of visual art which is three dimensional in nature. There are different types of sculpture which can be made by man. A sculpture made by man can be formed using stones, woods, metals, ceramics, clay, etc. A natural sculpture is a type of sculpture which is inspired by forms and processes from nature. 2. The forms of processes that exist in nature are: geographical changes, seasons, weather conditions, life cycles, metamorphosis and so on. These processes can inspire a natural form of sculpture. For instance, limestone that had been eroded with water usually formed a kind of sculpture known as contemplation stones.