Starting ponit: Dobbiaco/Gandelle. The Rifugio Bonner is situated at an altitude of 2,340 m, on the sunny side of Dobbiaco below the Corno di Fana. A: S. Martino/Val Casies - Gsieser Tal, B: S. Maddalena/Val Casies - Gsieser Tal, C: Colle/Val Casies - Gsieser Tal. Walking time: A: 4 hours., B: 5 hours., C: 5 hours. Altitude difference: 780m. Overnight accommodation.