From the Cisa Pass some paths lead to the Righetto Pass where, at the crossroads with the state road, a steep and demanding descent begins, up to Groppoli.
After having crossed the villages of Groppodalosio, Casalina and Topelecca, a long uphill path leads to the Crocetta Pass. From here a mule track climbs down up to Arzengio, and one soon reaches the fascinating Pontremoli, which rose between two water courses and is characterized by many bridges.
22 lap of: Via Francigena