The Balcon du Loup (or "balcony of the river Loup") is a pretty and relatively easy walk, taking you along through the deep gorge carved out by the river Loup.
The walk runs along a big water pipeline providing water from the Greolieres mountains further up, down to the villages below. Although rusty in places, the pipeline is still very much in active use.
You can start the walk in several places, in Gourdon or in the village of Bar-sur-Loup, winding up the hills via the Chemin de Paradis.
When you reach the pipeline, you can either carry on, bearing right, or turn left-ish and go up hill, towards the scenic village of Gourdon, clearly visible perched on top of a rocky promontory. The walk up to Gourdon and back takes about 3 hours and means you will have to negotiate some 500 meters of altitude difference with your starting point. The walk along the pipeline provides the balcony view on the river Loup and its namesake gorge; this is smooth-gradient walk, which you can continue all the way to Greolieres.
Note there's many tunnels along the route (23 to be precise), some of them very low, requiring you to stoop quite low in order to avoid painful collisions of your head with the unforgivingly hard rock... and yes, a torch is indispensable!