This work was shot over a period of seven years in the forest of Shirakawa Lake, which is flooded by meltwater for a month in the spring. Themes of the work are "the world woven by the humidity", unique to the northern basin surrounded by mountains; "the world woven by mountains, forests, and rivers" that create it; and "reality and unreality. Kazuaki Koseki is looking for answers to the environmental problems that occur at the same time while conveying the beauty of this scene created by the construction of the dam.