In 1968, Heinz Mack installed light columns with a height of up to eleven meters to reflect and mirror the glaring sunlight in the Tunisian desert. Nature and object fused to create an artwork of breathtaking beauty. Sophia Sotke's in-depth presentation traces an arc from the conception of the project in 1958-59 via the sensational film Tele-Mack (1968) and the subsequent Expedition into Artificial Gardens (1976) in Algeria and Greenland to the artistic experiments which Mack carried out in the Wahiba Desert in Oman in 1997. The book examines the importance of the Sahara Project in Mack's oeuvre together with his role in the development of Land Art. The volume is round out with unpublished photos of the expeditions into the desert and the Arctic regions that provide new insights into Mack's work.