PDC-F-001817-0000 Exterior of the grotto of Pozzuoli. The grotto opens at the center of a rocky landscape covered in vegetation. Above, to the left, a house can be glimpsed Credit: Alinari Archives, Florence WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Photographer: Rive, Robert Date of photography: 1860-1880 ca. Place of photography: Pozzuoli Collection: Alinari Archives-Palazzoli collection, Florence Object type: print on paper Photographic technique: P albumen Dimensioni: 241 x 191 mm Technical info Image sizes (pixel): 1964 X 2771 Image sizes (cm at 300 dpi): 16 X 23 Image sizes (MB): 5.71 Color space: RGB