1 / Access via Touvet from the Grésivaudan Valley (8 km) by taking the D30 (Chambéry side).
Before leaving Touvet or if you are passing by, take the opportunity to visit the Château du Touvet (dating from the Middle Ages and inhabited for 500 years by the same family) or to stroll in its magnificent gardens with its staircase. Italian-style water unique in France. Going up to the plateau via the D30, you will be able to enjoy the view of Belledonne and the Grésivaudan Valley, but it has happened on the Plateau that you will have the best view!
2 / Access via St Nazaire les Eymes (8 km) by the D30, Grenoble side.
Going up through St Nazaire you can enjoy lovely views over the Grésivaudan valley. You will pass through the tunnels cut into the limestone rock of Chartreuse before arriving on the plateau (possibility of parking near the tunnels to admire the view). To see in St Nazaire les Eymes: the heritage trail, the Manival torrent (listed in the geological heritage inventory), the Craponoz and Pissarotte waterfalls.
3 / Are you looking for an unusual way to reach the Plateau des Petites Roches?
Take the St Hilaire du Touvet funicular, leaving from Lumbin, in the Grésivaudan Valley!
4 / Access via the Terrace from the Grésivaudan valley.
In summer, come and enjoy the La Terrasse leisure center with your family (Apidae file). Activities for young and old with: inflatable structures on the water, undergrowth for picnics, Elfy Park (apidae sheet), rowing, kayaking
5 / Access via St Pierre de Chartreuse (16 km) via the Col du Coq.
As the crow flies, there are 1 or 2 km but if you want to connect St Pierre de Chartreuse to the Plateau des Petites Roches and you don’t have wings, you will have to climb the Col du Coq, at the foot of the imposing Dent de Crolles. The good thing is that the road is worth the detour. It starts in the hamlet of St Hugues, continues in the forest on the edge of a stream (very cool and bucolic) then leads to the mountain pastures, a guaranteed altitude atmosphere! Be careful, this is a small road, not suitable for motorhomes or large vehicles and which has deformations in places. Please note: following a strong landslide in early 2018, the Col du Coq road is closed for an indefinite period. Access to the Plateau des Petites Roches is therefore via Sappey, Biviers, St Ismier and then return to the D30 from St Nazaire les Eymes (see above).