The 115 is one of the three trails starting right from the Base Nato, and perhaps the steepest and fastest: number 97 on the Finale Outdoor Region map, a difficult enduro trail.
The style is that of the other trails on the same slope, but here you will find drops and small jumps. They are not signposted, but each has an alternative line alongside for those who prefer to skip them.
It ends on the same dirt road crossed by the Base Nato and Madre Natura trails. Before you set off, check on the Finale Outdoor Region website that it is open: trails close for maintenance, races or bad weather.