Shades of Nature: A Journey from Blue to Green is a land-art artwork created on the shore of the river Parana, Argentina. The piece involves creating a pattern on the sand of the beach by walking back and forth in the same place, thus connecting the colors blue and green.

The theory of color, which states that to create green, one must add yellow to blue, is explored in this artwork. The piece emphasizes the importance of colour harmony in nature and how it can be used to create beautiful and balanced patterns.

Walking is an art form in this piece, as the action of walking back and forth is used to create the artwork. The act of walking becomes a meditative experience, emphasizing the connection between the artist and the environment.