AVQ-A-000721-0028 Completion of the large dike before the entrance of the river current. Works relative to the management of the Tronto river, from Ascoli Piceno to the sea Credit: Alinari Archives, Florence WARNING: Permission must be required for non editorial use. Please contact Alinari Archives Photographer: Unidentified Author Date of photography: 1931 ca. Place of photography: Ascoli Piceno Collection: Alinari Archives-album collection, Florence Object type: photomechanic print Photographic technique: P photomechanics Dimensioni: 18,2 x 23,5 cm Technical info Image sizes (pixel): 2559 X 1908 Image sizes (cm at 300 dpi): 21 X 16 Image sizes (MB): 4.31 Color space: RGB