There's this remarkable "clair-obscur effect" between Mons Ampere and Mons Huygens in the Montes Apenninus (the appearance of two "stars" in the valley between the two mountains). I have observed this effect more than once (when the sunrise terminator is at or near Mons Pico).
The two "stars" appear wonderful in your photograph Stefan!
Danny Caes,
Public Observatory of Ghent - Belgium.
