In the late 1960s, first American and then European artists were drawn out of their studios and galleries into the landscape, where large-scale interventions were used to create temporary works of art in largely untouched nature, which were documented with a photo or film camera. Inspired by ritual sites of early cultural history, such as Stonehenge, or by the romantic observation of nature of the early 19th century, installations are created from materials of nature such as stone, sand or wood, with the knowledge that the landscape can and will change again.