Building based on the several drawings he did in 1590s of this monument. Very, very loose variant (with a lot less water!) in Swiss private collection. Fairly good variant (but not good enough to be studio, the faces are stone ugly) sold Christies London, July 5 1985 #13 (copper, 25.5 x 36.9), supposedly sig. & d. 160(7?)? This one was published by Ertz in Paris 1986 as genuine: Lake Landscape with Scipio's Tomb, cat. #8. Variant attributed to Jan II in Dresden, weak copy of which in Brera, Milan.