The bumpy road makes the two hills difficult to climb.
At the start the vegetation is short and the soil stony, but the second part is characterised by a dense wood and by the old mine Baccu Arrodas, once part of the rich mining district of Sarrabus-Gerrei.
The itinerary begins in the village of San Priamo, along the road to Muravera at 54km from the old 125 road.
The hike along the dirt road begins immediately after a short ride on a tarmac road.
Distance 38 km. Vertical drop: 850 m.