Silis

The Sile (Venetian: Sil) is a 95 km river in northern Italy. Its resurgent springs are near Vedelago (Province of Treviso) and it flows into the Venetian lagoon at the port of Piave Vecchia. It meets its tributary the Botteniga, or Cagnan, at Treviso.

Dante’s Cunizza da Romano prophesies the fate of Riccardo da Camino—he was apparently murdered at a game of chess—, locating it at this confluence:

e dove Sile e Cagnan s'accompagna,

tal signoreggia e va con la testa alta,

(And where the Cagnan and the Sile meet,

there’s one in power who goes with head held high:
the net to catch him is already made.)