The land art work "Phase of Nothingness – Stone Stack," or known as Stone Tower, conceived by our primary artist Nobuo Sekine(1942–2019) has finally been completed at Powder Mountain, Utah, USA.It has been more than half a century since its conception in 1970. The stacked black granite stones embody a quiet dialogue with nature and time, reflecting Sekine’s lifelong exploration of "existence and emptiness." This work is Installed as part of the Powder Art Foundation’s project that aims to form a new hub for land art, together with other artworks such as Nancy Holt’s "Starfire." The realization of his idea 50 years later as the living landscape in reality affirms that Sekine’s art is time-transcending across the world.