From the abandoned(?) Mina Don Mario, the road climbs steeply on a difficult surface. Once above the mine however you reach a plateau, and the road climbs gently on this to the high point.
| Name of Pass | Paso Don Mario |
| Where | Between Don Mario Mine (11km) and the junction on the Huancayo/Acobambilla road (4km) |
| GPS Co-ords | 12.450 S, 75.470 W |
| Altitude | 4,758m |
| Amount climbed | 450m (all on ripio) in 1h30 from Mina Don Mario |
