4. On the mineral trail - Tour of the Marguareis Nature Park - Stage 4
The invasion road
The former military road 194 (also known as the Invasion Road) should have connected the Certosa di Pesio with the Colle della Boaria. Begun
in 1940, as a matter of urgency, work was interrupted in September 1941, with several sections still unfinished.
It was considered of dubious strategic utility by some, indeed it could have facilitated a possible invasion by the French, by others it was considered a road built with the aim of opening an Italian attack route towards France.
[Le strade dei cannoni, pp.219-224]
La Conca delle Cársene
The Conca delle Càrsene is a vast plateau consisting of limestone rocks, characterized by expanses of bare, white rocks alternating with grassy cover.
It manifests the typical aspects of karst areas with limestone pavement, dolines and sinkholes. A superficial hydrographic network is completely missing: rain and snow meltwater are immediately absorbed and give rise to the resurgence of Pis del Pesio, located several hundred metres below.
Curiously, there are also areas located beyond the Alpine watershed, such as Plan Ambreuge, that are part of the catchment area, so water falling south of the Alps, after an underground journey, flow out on the Italian side.
[Alpi Liguri, p.80]
[La Guida del Parco Alta Valle Pesio e Tanaro, pp.46-47]
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Rifugio Don Barbera (2070m)
La structure actuelle, en pierre et en bois, est le résultat d'une rénovation complète récemment réalisée. C'est un refuge confortable, aussi bien pour les randonneurs que pour les groupes et les écoles.
Le refuge est situé à quelques mètres de la col des Seigneurs, entouré par la nature austère et intacte du parc naturel de la haute vallée Pesio et Tanaro.