Done in 1977 The “Trees in negative” by Menashe Kadishman is located at Lehigh University Lehigh Fields campus Bethlehem Pa USA. Here is one Oak tree in front of the of eight metal plates, each about 8 metres high, they constitute a private forest through which one can see the landscape, the frame of which is the contour lines of the trees.
Canon EOS 50D _{21mm f/5.6 ISO-100 Tripod Mt 3 step HDR PSPx4}