Descended Level - Between Vertical and Horizon -
Four Stones No.1 - F - No.8 ＤｅｓｃｅｎｄｅｄＬｅｖｅｌ－ＢｅｔｗｅｅｎＶｅｒｔｉｃａｌａｎｄＨｏｒｉｚｏｎ－＜ＢＲ＞ＦｏｕｒＳｔｏｎｅｓＮｏ．１－Ｆ－Ｎｏ．８

井田 照一