Photos must been taken between 1950-1960.
This view of NE-cost and the monastery Karakallou is interesting, because the building in the lower part of the picture seems the be the “mystery” building called Timiou Stavrou, that once belonged to Ukrain Russians form Odessa (see 798 and 702.
But it doesn’t mean Athos gave away all of its mysteries. What about this cell/kellion:
Again I have to appeal to our readers, who knows more about this building?
Here is the answer:
You can find this kellion also on picture nr 4, in the lower right corner.