The city of Arles, ARELATE, set up as a roman colony for veterans of Caesar's 6th legion on a low hill on the left bank of the Rhône near the river mouth, grew out to be one of the most important cities in the Western Roman empire, known as "Gallula Roma", the Rome of Gaul. Such an important city needed an aqueduct, and the most suitable area to provide the city with water was a 35 km long EW trending limestone massif to the NE, known as the Alpilles, with a maximum elevation of 492m. In roman times, the range...