GLQ-F-005076-0000 An ice cave near Niagara Falls Credit: Alinari Archives, Florence WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Photographer: Unidentified Author Date of photography: 1860 - 1870 ca. Place of photography: Canada, Niagara Collection: Alinari Archives-Guidotti Levi archive, Florence Object type: stereograph Photographic technique: P albumen Dimensioni: 15 x 8 cm Technical info Image sizes (pixel): 2785 X 1537 Image sizes (cm at 300 dpi): 23 X 13 Image sizes (MB): 3.22 Color space: RGB