Departure from the village centre of Sassenage, Chemin des Cuves.
(S/E) Place Louis Reverdy, with your back to the fountain and facing the pharmacy, take Chemin des Cuves to the left of the pharmacy (signposted "Cuves") and pass between a few houses to come out into a park. Opposite, Chemin des Cuves continues up the hill, either winding along the left-hand side or via steps on the right-hand side, whichever you prefer. As you climb, there are a few partial views of the Furon.
(1) Cross the resurgent stream on the first footbridge (admire the water emerging from the cave from the Gouffre Berger - the caves can be visited in season) and climb the few steps opposite. Leave the climb to the vats on your left and immediately descend a few steps to find the Furon in its gorges.
(2) Do not cross the second footbridge opposite you below (this is the return route).
Turn left towards the west and climb the very steep path at this point. There are some beautiful views of the gorges from the path, which gradually levels out. Stay on the right bank (with the river on your right) without straying onto the paths to the left, as they are all dead ends.
(3) Turn right and cross the third footbridge. Climb left for about 20 metres towards the west, then pass under the old openwork stone supports. Turn around and follow the path under the supports towards the east. The path overlooks the gorges on the left bank (you now have the Furon on your right). The path leads to a parking area with a bus stop called "Les Côtes". You are now in the upper village of Sassenage. Go to the paved street and turn left. Walk up Rue Pierre Dalloz for 50 metres. At the crossroads with Rue du Moulin, admire the façades of the old restaurants.
Return: The descent is via the same route as the outward journey to the Furon.
(2) Cross the footbridge to return to the left bank (with the Furon on your right); a little further down, there is a superb view of the main Furon waterfall. The path ends with a few steps, then descend Chemin des Côtes to the castle wall with its built-in fountain. Turn right, heading south-east towards Route du Vercors (downhill). After crossing the Furon bridge (cool and scenic), you will return to your starting point (S/E).