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Books about Ruppen:
Oswald Ruppen by Collectif (Oct 17, 2013)
Wiki information Ruppen:
Ruppen Pass is a high mountain pass between the cantons of St. Gallen and Appenzell Ausserrhoden in Switzerland. It connects Trogen and Altstätten. The pass road has a maximum grade of 9 percent.
Matteo Ruppen appeared in the 2011 documentary film Battle of the Queens.