Grand Rocher, Mountain summit in Belledonne range, France

Grand Rocher is a summit in the Belledonne range reaching 1926 meters, positioned between the Grésivaudan and Bréda valleys at the northern edge of the chain. The mountain features forested slopes and alpine meadows that rise toward the peak, with exposed rock formations visible from higher elevations.

The summit lies on the western crest above the Grésivaudan, between the communes of La Ferrière and Theys in Isère. Its hiking access was established along the GRP du Balcon des Sept-Laux, a long-distance footpath reached from the Col du Barioz and the Crêt du Poulet to the north, or from the Pleynet resort to the south. The site now forms part of the protected peat bogs of the Sept-Laux and Crêt Luisard.

The summit lies between the communes of La Ferrière and Theys, and its name, Grand Rocher, is used by local hiking clubs for the GRP du Balcon des Sept-Laux that passes it. In winter, ski tourers and snowshoers set out from the Barioz Nordic centre, a volunteer-run lodge, making the peak a seasonal meeting point for people from the Grésivaudan.

The summit is reached on foot in about 3 hours via the GRP du Balcon des Sept-Laux, either from the Col du Barioz and Crêt du Poulet to the north or from the Pleynet resort to the south. In winter the slopes are used by ski tourers and snowshoers, notably from the Barioz cross-country ski centre. The route lies between La Ferrière and Theys, a few kilometres north of the Sept Laux ski area.

The Grand Rocher lies within the protected zone of the Sept-Laux and Crêt Luisard peat bogs, a wetland area on the western balcony of the Belledonne chain. The summit is climbed in winter by ski tourers and snowshoers, often starting from the Barioz cross-country ski centre.