The start panel is located in Ausserbinn near the bus stop (Wasen/Zauberwald).
From there, you walk up to Binnegga. After a short rest in Binnegga, you go down to the Trusera irrigation channel.

You follow this until you reach the old Rappentalweg path. From there, you go down to Kalberboden and continue further down to the road known as Alpe Frid Strasse. From that point, you can already see your destination of Ernen.