Along what was once the Austro-Hungarian defense line and the opposing Italian front during World War I. Historic war trails and fortifications, alpine pastures and still-active mountain farms, the stunning Val Campelle, and the ascent through the wild Val Orsera, with countless alpine lakes and sweeping views over the entire Lagorai Range and Cima d’Asta — the highest peak of the group, which can be reached via an optional variant of the trek.