In order to guarantee the reception and allow the direct knowledge of the special Bessa landscape to users with motor difficulties, the Management Board for Foothills Reserves and Water Lands, along this particularly suggestive route opened a ring route of about 700 meters. Equipped in part with a wooden platform and in part with a cement bottom, it makes the transit easy also for wheelchairs, which otherwise would be precluded because of the road surface, generally made of pebbles.

The ring-shaped itinerary winds among wooded patches and piles of pebbles from which you enjoy panoramic views of the city of Biella, the mountains and the Serra hill. This route is located in one of the areas where the remains of Roman mining exploitation are most evident.
From the Visitor Centre of Vermogno the route goes back for about one hundred meters along the tarmac road until the beginning of the cart road on the left, which enters the wood. Soon the path comes out into the open and the first piles of pebbles appear, with a wide view of the mountains.
Proceeding slightly downhill, you reach the base of a high mound on the left, from the top of which you enjoy a magnificent landscape: Biella and the high plain, the Biellese Alps and the first offshoots of the moraine hill of Serra. This area is called "Ciapei Parfundà", that means "sunken stones", because the inhabitants of the place tell about the existence of a tunnel that penetrated into the pebbles. The homonymous settlement, located east of the mound, consists of several buildings sunk in the stony ground: one of these, of considerable size, connects to other smaller structures through a tunnel. Fragments of pottery dating back to a period between the end of the second and the first half of the first century B.C. have been found here.
The path surrounds the small village on the left and continues along a canal that further on flows into the "anthropic conoids" that fan out onto the plain below and are made up of the material resulting from the washing of the auriferous sands during the exploitation of the mine.
The route then turns back and, resuming its ascent, continues along the grassy path through a wood of oaks and hornbeams. After a number of bends, you come to the cart track you took at the beginning of the itinerary and turn right until you return to the tarmac road and the Visitors' Centre.

Route subject to enhancement with the funds of the PSR 2007-2013, Measure 313, Action 1.

Location: Zubiena (Viverone, Serra and Bessa)

Means of transport: On foot

Length(km): 2.07

Uphill height difference(m): 31

Travel time: 1 hour