Access: Drive to Isola 2000 (D97); at the roundabout at the resort entrance, continue towards the Col de la Lombarde for about 1,100 metres until you reach a hairpin bend on the left. Leave the pass road at this point to park (car park) near marker 90a, the starting point of the hike.
(S/E) From marker 90a (altitude 2080m), the path heads east-southeast, becoming slightly steeper, then turns left towards the north-west just before reaching marker 91.
(1) Then head right, due east, following the Terre Rouge valley for about 200m (north-east), then turn right (east) to reach marker 92.
(2) Continue left towards the north to go round a ridge on the left and reach the first of the Terre Rouge lakes (altitude 2417m).
(3) Continue north, keeping all the lakes on your right, until you reach marker 93.
(4) Leave the path leading to Baisse de Druos on your right and continue north towards Pas du Loup, which you can see ahead of you (photos) between Tête de Combe Grosse on the left and Mont Malinvern on the right. A superb vantage point overlooking Mont Viso directly to the north if the weather is fine.
(5) From the Pas du Loup (altitude 2665m), return via the same route to reach the car park (S/E)