Six laps, for a total of 40 kilometers, along routes built for military aims to get to the old mining sites of Valle Imperina and Vallalta. A journey across the Park, along its northern borders, looking for the lost ancient times.
Difference in height, length of the route, and walking time: varying according to the chosen route (there are many possible alternative routes from the main one).
Location: between Forcella Moschesin (Municipality of La Valle Agordina) and the former Mines of Vallalta near Gosaldo.
Access: access to the starting points of the different laps from La Valle Agordina, the Mines of Valle Imperina (SR 203 Agordina), from the road Agordo - F.lla Franche, from Gosaldo and from the SP road of Valle del Mis.