Land art, also known as earth art, emerged in the late 1960s as an art movement that creates works of art directly in nature using materials found in the landscape like soil, rock, and organic media. The works are not sculptures placed in nature but rather alter the landscape itself and frequently exist outdoors, unprotected from natural weathering and erosion. Many land artworks are ephemeral and only documented through photographs since they exist at a large scale across remote natural settings.