Why it belongs here
The Olona (Western Lombard: Ulona, Urona or Uòna) is an Italian river belonging to the Po Basin, 71 kilometres (44 mi) long, that runs through the Province of Varese and Metropolitan City of Milan whose course is developed entirely in Lombardy. The river born at 548 meters above sea level in the Fornaci della Riana locality at the Rasa of Varese, at the Sacro Monte di Varese, within the Campo dei Fiori Regional Park.
Source-backed
