The trail runs along Fosso dell'Anna, crossing the torrent several times.
Go beyond the ruins of Pollo mill, cross the torrent again, follow the uphill trail on the left until you will find a dirt road that, after a junction (take the trail on the left), reaches Nottiano and then Armenzano.
Texts and photos taken from "Parco del Monte Subasio", Quattroemme, Perugia 2006. All rights reserved.