Réservoir de Montrouge, basin supérieur, côté droit (Montrouge Reservoir, Upper Basin, Right Side)

The image shows a construction site from above. In the distance, there are tall structures including two towers and a smokestack. The foreground features a stone wall and wooden walkways with workers engaged in construction activities. In the middle ground, more workers are visible working on masonry. The photo is in black and white, highlighting the textures of the materials used.