Description of the route

From the hamlet of Steina, take the mule track signposted 12.
The trail gradually moves to the right past the stream over the beautiful waterfall of Loo, which is clearly visible from the valley floor.
The trail becomes steeper and crosses the stream again before reaching the pasture of Loo Inferiore (1854 m).
At this point the valley becomes flat and, a moderate climb takes you to the cabins of Loo Superiore (2076 m).
Move left and continue past the short slopes and wide expanses down to the basin of Col Loo. When you get to an important crossroad, ignore the itineraries for Col Lazoney and the Macagno Pass, and continue along route 12, by which you easily gain the hill.