From the Grostè Pass take itinerary 301 in the direction of the Malga Spora and Andalo. After a short descent, carry on as far as Le Crosette where the path meets path no. 314 coming from the Perse Valley. Follow path no. 314, turning left (i.e. northwards) and go down the Santa Maria Flavona Valley. 
Near the Malga take path no. 330 which follows the right bank of the Flavona Valley as far as the Prà dell’Asen meadow; here the path turns eastwards, to the north of the Cima Prà dell’Asen and the Cima di Val Stangola peaks, to come to the Loverdina wood and shortly afterwards to the Malga Termoncello. From here go down through the wood to the Malga d’Arza from where an asphalt road leads to Cunevo in the Non Valley.