A nice are around "Località del Forte" with some slopes, gravel terrain, single tracks and grass, the maps isn't very accurate so some path may be different from what komoot shows.
A short MTB segment between Zampis, Lazzacco and Alnicco, if you are coming from Lazzacco, the first part of the segment is slightly downhill and is full of big stones.
A quite long and funny single track up and down the hills near Brazzacco. The segment is practicable with a gravel bike too. It is quite beaten but there are a some tree roots on the path and some jumps
A short MTB segment, with gravel terrain but with big rocks, this route leads to other segments to the north, east and west, all of them are mixed terrain/MTB