As the gateway to the Vercors massif, the commune of Fontaine and the Karl Marx park offer a gentle assault on its foothills via the Bois des Vouillands.
A number of hiking and biking trails can be explored from the park, including a climb to the Tour Sans Venin for the more courageous who wish to enjoy a magnificent view over the whole of the Grenoble conurbation.
Free access
All year round, daily.
Public transport: Tram A and bus line C6 to Louis Maisonnat stop,