Mountaineering School in Val di Fassa - Dolomites Fassa Guide is the mountaineering landmark in Val di Fassa. Its team is made of UIAGM/IFMGA certified Mountain Guides, Mountaineering and Climbing Instructors, all extremely professional and experienced and with very respectable resumes. Fassa Guide offers a full range of activities and excursions for a unique mountain experience: high-altitude mountain climbing; climbing on ice, rock and mixed terrain; climbing on via ferrata; ski mountaineering; off-piste skiing; snowshoeing; canyoning; volcano excursions; trekking; ski touring.