Large south wall, looking from west to east. This wall holds 4 triangles each of which is 8 feet tall and 4 feet wide. Each small "D" or simplified bridge form is between 11 and 12 inches wide; the doubles are about 2 feet tall; triples about 3 feet tall; and the quads about 4 feet tall. The two triangles in center that form a square or diamond are 5 inches apart. Gaps between the center and outer triangles are 17 inches.