Detailed Pen and Ink Illustration of a Stone Aqueduct Resembling Roman ... Illustration of a Roman Aqueduct with Multiple Stone Arches. Detailed ... A Detailed Black and White Illustration of a Roman-style Aqueduct with ... Illustration of a Roman Aqueduct Featuring a Series of Stone Arches ... Pen and Ink Drawing of an Ancient Aqueduct Spanning Across a Hilly ... Line Drawing of a Roman Aqueduct Featuring Two Tiers of Stone Arches ... Stone Aqueduct Illustration Shows a Series of Stacked Arches Supported ... Illustration of Ancient Roman Aqueduct Cross Section. Stone Arches ...