Kserias Canyon Το φαράγγι του Ξεριά. Kserias Canyon.Pylos, Messinia, Greece Magical natural scenery at Xerias gorge near Pylos and this large arch is part of the 15 km aqueduct system that carried water from "Koumbe" springs near Chandrinos down to the castle of Pylos. Built by the Ottomans at the 16th century, has 3 m wide pylon bases, 9 m arch width and 12 m max. height. Impressive building feat regarding the remoteness of the site, the amount of labor needed at the time, and the mathematical precision required in order to sustain smooth water flow through rough terrain for 15 kilometres.