Land art, otherwise known as earth art, is an artistic movement that involves creating site-specific artwork using natural materials found in the environment. Other synonymous terms for land art include environmental art, eco-art, and earthwork. These terms underscore the significance of creating art that is integrated with the environment and highlights the significance of sustainability and conservation. Land art is often characterized by the use of rocks, soil, plants, and water that are arranged or transformed into artistic installations. Examples of land art include the Spiral Jetty by Robert Smithson, which is a curving jetty made from rocks, salt crystals, and water, and Andy Goldsworthy's stone and leaf sculptures.