Land art, or Earth Art as it is sometimes called, was an art movement that emerged in the late 1960s into the 1970s that used the natural landscape to create site specific artworks designed to expand boundaries by the materials used and siting of the works. How these works were encountered by viewers was a central component to their deeper more metaphorical meaning. The art movement known as Land Art rejected the commercialization of art making, embracing in its place a burgeoning ecological movement. One of the most important elements to consider when looking at and discussing this kind of work is its impermanence, and the idea that transience, mutability and decomposition are central to our understanding of the world and our place in it. Where most art presumes immortality, fetishizing objects to an exalted status and placing them in galleries and museums throughout the world, Land Art speaks directly to the insubstantiality of life and our fragility as human beings. The way in which we encounter these works determines the essence of their meaning.