The route starts from the car park at the Saint-Rhémy-en-Bosses ski resort, which is easily reached from Aosta.
You quickly reach the mountain pastures after an initial climb through a larch forest. You pass a group of stone houses with slate roofs at the Arp du Bois Desot. Then, the landscape opens out onto the ridge of a vast mountain pasture which leads easily to the Fenêtre de Serena, where the view stretches across the French and Italian Alps as far as the eye can see.
Country:
Italy
City:
Saint-Rhémy-en-Bosses 
(1) From the village, head south then south-east to point 2.
(2) Head due south towards the last trees, then follow the route to the pass by taking the ridge of the mountain pasture, heading south-east.
(3) A sign indicates the finish. From there, the descent roughly follows the ascent route.
On the map, the valley is marked as "Col Serena", but the summit is written as "Fenêtre de Sereina" with an "i". This is not shown on the summit sign!
The pass between Mont Flassin and Testa Cordellaz 
Visorando Member 
7.97 mi
+4,154 ft
-4,157 ft
6 hrs
Very difficult
Departure from Saint-Rhémy-en-Bosses (Aosta Valley)
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