From 1978, Bukichi Inoue began producing works of various shapes and sizes on the theme of "my sky hole." As this suggests, the works incorporated a hole through which the sky could be viewed, forming a place of personal, supreme bliss, and this work was the first to realize the idea. The work depicts the viewer's experience of traveling underground through an iron box before emerging again from a glass box. Sitting on the small, round chair in the small, subterranean room and looking up, a "hole to observe the sky” opens. According to the artist, "it is a place where you can feel the pulse of the earth, a place to talk of the universe.