Cairo Pyramids - People have defaced the walls of the burial chamber of the structure next to the Great Pyramid

Like in the previous photo, there were problems related to the conservation of historical monuments. In this case, in this photo of defaced stones (where people have written on the walls of the wall of the burial chamber, of the structure right next to the Great Pyramid), you can get a view of how it is difficult to ensure that historical monuments are not defaced.