Andy Goldsworthy

Andy Goldsworthy's philosophy is on his website and in summary, the man loves nature. With every place he goes he spends a lot of time getting to know the area, the materials, and everything about his environment. What's interesting about his work is that it is perishable. It doesn't keep it's form forever, but, like he mentions in his philosophy, that's his aim. When he makes a line of stones, years later, those stones will still be in a line, but moved shifted, and often, underneath more stones - so his mark is still there, just concealed within nature. Sometimes he works with materials like snow, which, obviously, will melt away and perish quite quickly as soon as the weather changes. He constantly has to work with what the environment throws at him. Here are some examples of his work. All the images are from here.

Images meant for coffee table books, but still quite beautiful and thought-provoking, Andy Goldsworthy records his work at the peak of their existence and then leaves it at the hands of nature and, subsequently, decay.