As you can see in the video, Andy Goldsworthy demonstrates different used of materials to reach the appearance of River and Tides. For example, there are ice, wood knots, stones, sands, and sticks. The shape of river and tides on ice is a tremendously difficult job to do because it is slippery and freezing; simultaneously, Andy have to patiently build up the sculpture which collapses many times. The concept of River and tides is no difference than most of other artworks from Andy Goldsworthy, that is, the connection between movement, time, change, life, and nature. The curved moving line gives an uncertainty as it is how nature is. The bigger the curved is, the slower movement it visually looks. The River and Tides also refers to the liveliness of nature behave as our original source of everything. For example, The “Stone River” in Stanford University also has a shape of river and tides to make connection with nature, life, and living things that live in the nature. With each failure, Andy Goldsworthy learns more about stone from every failure. To work outdoor is not as easy and fun as it looks. As a result, Andy Goldsworthy has an outstanding endurance and patience to be exceptional.