Pictures taken of the same scene at different periods in time are always evocative. I believe the following two pictures are of the same trullo. Notice that there is a child seated in the exact same spot.
|from a 1930's era National Geographic article|
|STONE SHELTERS by Eward Allen 1969|
Edward Allen, the author of "Stone Shelters" cited the February 1930 issue of National Geographic in a footnote so there is the possibility that he set up the picture. It is also curious that the address number is not the same.