Land art, also known as earth arts, are a type of art movement in which the landscape and the art are inextricably linked. It is also a natural art form, created with raw materials such as soil, rock (bedrock, boulders, stones) organic media (logs. Branches, leaves), and water. Materials such as concrete, metal, asphalt or mineral pigments are introduced. The sculpture is not placed in the landscape; instead, the landscape is the medium through which it is created.