Between countryside and rocky walls
- Departure: Vignui (501m)
- Arrival: calcheraalla partenza del sentiero CAI 812 (691m)
- Difficulty Level: MC/TC
- Length: 8 km
- Difference in height: 190m
- Minimum Altitude: 501m
- Maximum Altitude: 691m
- Recommended Period: from April to October
From the town of Vignui, take the Val di San Martino (CAI 803 trail sign), after passing through well-tended countryside, continue along the course of the Stien stream, reaching the church of San Martino. You then continue the ascent of the valley to a small car park and continue uphill to a restored calchera (furnace to produce lime); from here the steep paths allow you to climb (only on foot) the steep southern slopes of the Vette Feltrine. You return to Vignui by the same outward route
Access: from Feltre reach the hamlet of Foen, at the exit from the town turn left to Vignui
Ground: 20% asphalt; 80% unpaved road
Didactic supports: didactic panels of the Park at the church of San Marino and along the valley