The Ponte Oscuro,Ticino
   The Ponte Oscuro, or 'dark bridge' is situated in a deep gorge of the Onsernone valley north of Russo in Ticino. A masterpiece of architecture this unusual bridge has three arms where it splits into two branches, one leading to the Val di Vergeletto and the other following a breathtaking rock face on the side of the Ribo river up to the end of Valle Onsernone.
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Flag of the canton of Ticino