Elsa, River in Tuscany, Italy
The Elsa is a river in Tuscany that flows through the provinces of Florence and Siena before joining the Arno. Its course runs through limestone terrain, which gives the riverbed a varied character from one stretch to the next.
The river was already inhabited in Etruscan times, and its name comes from the Etruscan word Hèlza. During the Middle Ages, people built hydraulic works along its banks, such as the Steccaia, to channel water for mills and irrigation.
Old water mills still stand along the banks, showing how central the river once was to local crafts and trade. Some of these structures are still visible today and make the walk along the water more interesting.
The river is easiest to explore on foot, with several access points and clear markings along the way. In summer, some stretches are used for swimming, but it is worth checking water conditions before going in.
The water takes on a turquoise tint in places, caused by limestone dissolving in the riverbed and releasing fine particles that scatter light in shades of blue and green. This makes the color shift noticeably from one stretch to another depending on the depth and flow.
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