This undergrowth hike, only signposted for the first few kilometers, leads to a wide ridge between the peaks of Roca Cuna and Plan Tendasque. You arrive at a vast panorama: Castérino, la Minière, l'Agnelino and la Roche de l'Abisse.
- From the hamlet of Castérino (1,550 m - b.391), climb up the wide old military road on the orographic right bank of the Fontanalbe valley through a forest of spruce and fir.
- After two large hairpin bends, you come out onto a small plateau with widely-spaced larches, and continue westwards along the path that leads to the Fontanalbe refuge, rising gently to 1,800 m above sea level.
- Just before the end of the wood, leave a large avalanche corridor to the west and climb a steep slope to the left (south), always staying on the orographic right bank of the corridor.
- Pass ruins and turn left to reach the buildings of Gias de la Gasta (1,925 m) at the foot of a rocky spur: continue to climb to the left to reach a flat, which you cross in a south-easterly direction until you reach a well-marked valley.
- Then climb up a wooded ridge to the right (south) to reach the wide ridge (2,010 m) between the Plan Tendasque and Roca Cuna peaks. Continue easily to the left along the ridge (southeast) until you emerge from the forest and reach a characteristic knoll (2,100 m) overlooking Plan Tendasque.
- Return by the same route
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Plain text period
From 01/12 to 30/04 daily.
Depending on snow conditions.