What a weird photo from so long ago.  Believe it or not, there’s at least one human in this, though you will need to card in your hand to find him.  Sepia, unused, old heavily aged card with a bit of erasable pencil on the back … and an official Crozon-Bretagne website describes this same shot (about 100+ years later) as (translated) “Don’t look for the drawbridge or the turrets! This castle doesn’t need it… That’s what we call this huge rock connected to the point by an arch dug by the sea, which we can see very well from Kerloc’ beach, on the other side of the cove of Dinan, at each low tide.”  We will take their word for this,  Grade: 2